And He Believed the LORD

Read Genesis 15 and Genesis 16 in full before proceeding. Keep your Bible open throughout this session.

Abram believed the LORD, and the LORD credited it as righteousness to him.
— Genesis 15:6

The two chapters before us — Genesis 15 and Genesis 16 — could hardly be more different in mood.

Genesis 15 is one of the great theological chapters of the Old Testament. The LORD comes to Abram in a vision. He renews and deepens the promise of seed and land. He cuts a covenant with him by passing alone, in the form of fire and smoke, between the divided animals. And in the middle of the chapter — almost in passing, as if the narrator did not quite realize what he was setting down — comes a single sentence: And he believed the LORD, and he counted it to him as righteousness (Genesis 15:6). The doctrine of justification by faith finds its foundational Old Testament expression in those eleven words. Paul will quote them in Romans 4 and Galatians 3. James will quote them in James 2. The Lutheran Reformation will be built, in part, on this single verse.

Genesis 16, by contrast, is the chapter of unbelief. Sarai, growing impatient with the LORD’s timing, proposes a workaround. She gives her Egyptian slave Hagar to Abram as a concubine. Hagar conceives Ishmael. The household falls into bitter conflict. Hagar flees into the wilderness. And in the wilderness, the LORD finds her — and meets her with mercy. The slave-woman who is being used and discarded by everyone becomes the first person in Scripture to give God a name: El-Roi, the God who sees me.

The two chapters together tell us, in compressed form, what we will see across the rest of the patriarchal narratives. The LORD makes promises. The patriarchs believe — and the LORD counts their belief as righteousness. And then, when the promises do not arrive as quickly as the patriarchs would prefer, the patriarchs try to engineer the outcome by their own means. The seed-line that runs through Abram, Isaac, Jacob, Joseph will run through a series of these failures. The LORD will be faithful through them. The promise will be kept despite them.

Fear Not, Abram

After these things the LORD’s message came to Abram in a vision: “Fear not, Abram! I am your shield and the one who will reward you in great abundance.”

The chapter opens with a phrase that will recur throughout the Old and New Testaments. Fear not. It is the LORD’s standard word of comfort to those who tremble in His presence. Abram has just turned down the wealth of Sodom; he has refused the king of Sodom’s offer; he has lifted his hand to the LORD and committed not to enrich himself from the wicked city. The LORD now responds. Fear not, Abram, I am your shield; your reward shall be very great.

I am your shield. The LORD personally pledges Himself as Abram’s defense. Abram has just been at war. He has 318 trained men, but he is a sojourner in a land of established peoples. The LORD assures him that his protection is not finally in his weapons or his alliances. The LORD Himself is his shield.

Your reward shall be very great. Abram has just refused the spoils of Sodom. He has refused to take a thread or a sandal strap. The LORD responds: you do not need Sodom’s wealth. Your reward is from Me. The man who refuses worldly reward receives heavenly reward in its place. This is the gospel logic. Those who lose their lives for the LORD’s sake will find them. Those who refuse the world’s bread will eat at the LORD’s table.

But Abram said, “O Sovereign LORD, what will you give me since I continue to be childless, and my heir is Eliezer of Damascus?” Abram added, “Since you have not given me a descendant, then look, one born in my house will be my heir!”

Now we get to the heart of Abram’s anguish. He is old. He is wealthy. He is established in the land. He has won a great military victory. But he has no son.

The LORD has been promising him a great nation. The LORD has promised that all the families of the earth will be blessed in him. The LORD has promised that his offspring will be as the dust of the earth. But the years are passing, and the wife is still barren, and Abram is starting to do the calculations every aging man without children eventually does. The heir of my house is Eliezer of Damascus. By the legal customs of the ancient Near East, a childless man could adopt a senior servant as his heir. Abram has, apparently, made provision for Eliezer to inherit his estate. The provision is practical. The provision is also a quiet admission: Abram is no longer expecting a biological son.

The pastoral honesty of this moment is striking. The patriarch is not pretending. He is not maintaining a brave face. He is laying his unfulfilled longing before the LORD with raw directness. What will you give me, for I continue childless. This is the prayer of a man who has been waiting too long and is beginning to lose hope.

The LORD does not rebuke Abram for his complaint. The LORD answers him.

But look, the LORD’s message came to him: “This man will not be your heir, but instead a son who comes from your own body will be your heir.”

The LORD overrides the legal arrangement. Eliezer will not be the heir. Abram’s very own son — biological son, born from Abram’s own body — will be the heir. The promise is sharpened. The seed will not come through adoption. It will come through Abram’s own line.

The LORD took him outside and said, “Gaze into the sky and count the stars—if you are able to count them!” Then he said to him, “So will your descendants be.”

The LORD takes Abram out under the night sky. This is one of the most cinematic moments in the Old Testament. The old man and the LORD, standing together under the stars of the ancient Near East. Look toward heaven, and number the stars. The night sky in the ancient world, without the light pollution of modern cities, was an overwhelming spectacle. The number of visible stars is vast — modern astronomy estimates two to three thousand visible to the naked eye on a clear night, plus the broad band of the Milky Way. Try to count them. You cannot. The exercise itself defeats the attempt.

So shall your offspring be. As innumerable as the stars. The man who has been told his descendants will be as the dust of the earth (Genesis 13:16) is now told they will also be as the stars of heaven. Both images press the same point: the multiplication will be beyond counting. The barren wife will somehow produce a multitude.

And then comes the verse.

Abram believed the LORD, and the LORD credited it as righteousness to him.

Thirteen words in English. Five words in Hebrew. Vehe’emin ba-YHWH vayyachsheveha lo tzedakah. This is the foundational Old Testament text on justification by faith. Paul will quote it in Romans 4:3. He will quote it again in Romans 4:9, 4:22. He will quote it again in Galatians 3:6. James will quote it in James 2:23. The doctrine of justification by faith — the heart of the Lutheran Reformation, the doctrine that has been called the article on which the church stands or falls — has its foundational Old Testament expression here, in Genesis 15:6.

Walk through the verse slowly.

And he believed the LORD. The Hebrew verb is aman. It is the root from which we get the word amen. It means to be firm, to be steady, to be reliable, to trust, to lean on. When the verb is used of a person trusting in God — as it is here — it carries the sense of leaning the whole weight of one’s confidence on God’s word.

Abram believed the LORD. He did not believe an idea about the LORD. He did not give intellectual assent to a proposition. He did not work up a religious feeling. He trusted Him. He leaned the weight of his anguished longing for a son onto the LORD’s bare word. The LORD had said your offspring will be as the stars. Abram had no son. Sarai was barren. The natural means were closed. And Abram leaned on the LORD’s word anyway. He believed the LORD.

This is faith. Faith is not generic religiousness. Faith is not warm feeling. Faith is not assent to abstract doctrines. Faith is trust in what God has said — specifically, trust in His promise. Abram had the promise of innumerable offspring. He trusted it. He let his hope rest on it. That trust is what the text calls believing the LORD.

And he counted it to him as righteousness. The Hebrew verb in the second clause is chashav. It means to think, to reckon, to count, to credit, to impute. The LORD counted Abram’s faith as righteousness. The LORD reckoned it to him. The LORD credited it to his account.

This is the language of imputation. The LORD does not say that Abram’s faith was righteousness in itself. The LORD does not say that Abram had earned righteousness by an act of believing. The LORD does not say that faith is a kind of moral virtue that constitutes righteousness. The LORD says that Abram’s faith was counted as righteousness — credited to him, reckoned in his favor, written down in his account by divine decree.

This is the heart of the gospel. The LORD declares the sinner righteous on the basis of faith — not because the faith itself meets the requirements of righteousness, but because the LORD chooses to count it that way. The righteousness is imputed. It is a gift. The reckoning is the LORD’s.

Pause to notice what the verse does not say.

It does not say that Abram earned righteousness by his works. Abram was a man with a complicated record — he had lied about Sarai in Egypt, he had taken matters into his own hands in various ways. His record was not perfect. The text does not say his righteousness came from his moral excellence.

It does not say that Abram earned righteousness by his religious observances. He had built altars; he had called upon the name of the LORD; he had given a tithe to Melchizedek. But the verse does not attribute his righteousness to these acts of worship.

It does not say that Abram earned righteousness by his lineage. He was descended from Shem, but the verse does not invoke genealogy.

It does not even say that Abram earned righteousness by his faith. The verse does not say Abram believed, and that belief was righteousness. It says Abram believed, and the LORD counted it to him as righteousness. The counting is the LORD’s act. Abram trusts; the LORD reckons. The righteousness comes from the LORD’s reckoning, not from the believer’s believing.

This is the precise doctrine that the Lutheran Reformation would articulate fifteen centuries after Christ. Article IV of the Augsburg Confession — On Justification — states it concisely: Men cannot be justified before God by their own strength, merits, or works, but are freely justified for Christ’s sake, through faith, when they believe that they are received into favor, and that their sins are forgiven for Christ’s sake, who, by His death, has made satisfaction for our sins. This faith God imputes for righteousness in His sight.

Notice the last sentence. This faith God imputes for righteousness in His sight. Article IV of the Augsburg Confession is, in part, a paraphrase of Genesis 15:6. The Reformation theology of justification is not an invention of Luther’s. It is the doctrine the Old Testament itself taught about Abram. The Reformers were not innovators. They were recovering what was always there.

Cutting the Covenant

The LORD said to him, “I am the LORD who brought you out from Ur of the Chaldeans to give you this land to possess.” But Abram said, “O Sovereign LORD, by what can I know that I am to possess it?”

The chapter continues. Abram has believed. But Abram also asks. How am I to know? He believes — and yet he wants confirmation. The two postures are not contradictory in the biblical understanding. Faith is allowed to ask for assurance. I believe; help my unbelief (Mark 9:24), the desperate father will eventually cry to Jesus. Abram is in the same space. He has trusted. He also wants to be assured.

The LORD does not rebuke the question. He answers it.

The LORD said to him, “Take for me a heifer, a goat, and a ram, each three years old, along with a dove and a young pigeon.” So Abram took all these for him and then cut them in two and placed each half opposite the other, but he did not cut the birds in half. When birds of prey came down on the carcasses, Abram drove them away.

The ceremony begins. The LORD specifies the animals: a heifer, a female goat, a ram — each three years old — and a turtledove and a young pigeon. Abram is to cut the larger animals in half and arrange the halves opposite one another. The birds are not cut. They are simply laid alongside.

This is a covenant ceremony from the ancient Near East. The Hebrew idiom for making a covenant is karat berit — literally, to cut a covenant. A covenant, in the ancient world, was cut. Animals were divided. Both parties to the covenant would walk between the divided pieces, making a kind of self-curse: may I be cut in pieces like these animals if I break this covenant. Jeremiah 34:18 describes the ceremony explicitly. It was a binding ritual. The covenant was cut into the very flesh of the sacrificed animals.

Abram knows what this ceremony is. He is being asked to enter into covenant with the LORD. He prepares the animals. He drives away the birds of prey that would defile the offering. He waits.

When birds of prey came down on the carcasses, Abram drove them away. When the sun went down, Abram fell sound asleep, and great terror overwhelmed him. Then the LORD said to Abram, “Know for certain that your descendants will be strangers in a foreign country. They will be enslaved and oppressed for 400 years. But I will execute judgment on the nation that they will serve. Afterward they will come out with many possessions. But as for you, you will go to your ancestors in peace and be buried at a good old age. In the fourth generation your descendants will return here, for the sin of the Amorites has not yet reached its limit.”

The deep sleep falls. The Hebrew word is tardemah — the same word used in Genesis 2:21 when the LORD caused a deep sleep to fall on Adam before creating Eve. Dreadful and great darkness — a terror, a heavy supernatural weight — falls on Abram. The LORD is about to do something. Abram is being put in a posture not of action but of reception. He will not walk between the pieces. He will lie still while the LORD acts.

In that deep sleep, the LORD speaks. He prophesies the future of Abram’s offspring. They will be sojourners in a foreign land — Egypt is meant, though not yet named. They will be servants there — they will be slaves. They will be afflicted for four hundred years. But then the LORD will judge that nation, and Abram’s offspring will come out with great possessions. The exodus is prophesied here, four centuries in advance.

As for you, you shall go to your fathers in peace; you shall be buried in a good old age. Abram himself will not see the affliction in Egypt. He will live, die, and be buried in peace. The promise of the land will be fulfilled for his descendants, not for him personally.

The iniquity of the Amorites is not yet complete. This is a remarkable theological statement. The reason Abram’s offspring must wait four hundred years before possessing the land is that the current inhabitants — the Amorites and other Canaanite peoples — are not yet ripe for judgment. The LORD is patient. The LORD will not destroy a people until their wickedness has fully matured. Even the eventual judgment on the Canaanites is exercised on a divine timetable that is more patient than humans would be. The God of Abram is not capricious; He is the moral governor of all nations, and even His judgment unfolds according to His own measured timing.

When the sun had gone down and it was dark, a smoking firepot with a flaming torch passed between the animal parts.

Now comes the covenant act itself. As darkness falls, a smoking fire pot (an oven, a brazier) and a flaming torch appear and pass between the divided animals. Abram does not pass through. Abram is still in his deep sleep. Only the LORD passes — represented by smoke and fire, the standard imagery of theophany. The pillar of smoke by day and pillar of fire by night that will lead Israel in the wilderness; the smoke and fire that will descend on Sinai at the giving of the Law; the smoke and fire that will fill the temple at its dedication — all of these have their first appearance here, in the LORD’s covenant with Abram.

And the meaning of the act is enormous. In an ordinary ancient Near Eastern covenant, both parties walked between the divided pieces. May I be cut in pieces like this if I break the covenant. But in this covenant, only the LORD walks. Abram is in a deep sleep; he cannot walk; he is not invited to walk. The LORD alone takes the self-curse. The LORD alone binds Himself to the consequence of broken covenant. If the covenant is broken — and humanity will, again and again, break covenant with God — the LORD has, in this act, taken the consequence on Himself.

This is one of the most extraordinary cross-foreshadowings in the Old Testament. The LORD has, in symbol, committed Himself to bear the curse of the covenant in His own body. The smoke and fire passing between the bloody pieces are the LORD’s pledge that He will pay if the covenant fails. And when, in the fullness of time, humanity has failed the covenant beyond repair, the LORD will keep this pledge — His own Son will bear the covenant’s curse in His own body on the tree, becoming a curse for us (Galatians 3:13), on a cross outside Jerusalem. The smoke and fire that passed between the divided animals at Abram’s covenant ceremony pointed forward to the smoke and fire that would consume the true Lamb on the altar of Calvary.

The covenant with Abram, then, is unilateral. The LORD binds Himself. Abram receives. The promise is one-sided. And the cross is foreshadowed in the very ceremony by which the covenant is sealed.

When the sun had gone down and it was dark, a smoking firepot with a flaming torch passed between the animal parts. That day the LORD made a covenant with Abram: “To your descendants I give this land, from the river of Egypt to the great river, the Euphrates River— the land of the Kenites, Kenizzites, Kadmonites,

The chapter closes with the formal grant of land. The boundaries are specified — from the river of Egypt to the Euphrates. The peoples whose land will become Israel’s are listed. The covenant is cut. The land is given. The promise is sealed by the LORD’s own passage through the divided pieces.

Sarai’s Plan

If Genesis 15 is one of the most beautiful chapters of the Abrahamic narrative, Genesis 16 is one of the most painful.

Now Sarai, Abram’s wife, had not given birth to any children, but she had an Egyptian servant named Hagar. So Sarai said to Abram, “Since the LORD has prevented me from having children, please sleep with my servant. Perhaps I can have a family by her.” Abram did what Sarai told him. So after Abram had lived in Canaan for ten years, Sarai, Abram’s wife, gave Hagar, her Egyptian servant, to her husband to be his wife.

Sarai speaks. She has been waiting too long. The years have piled up. The LORD’s promise has not been fulfilled, and Sarai is now old enough that she has effectively given up on bearing a child herself. She proposes a workaround. She has an Egyptian slave named Hagar. The custom of the ancient Near East — well documented in surviving legal codes like the Code of Hammurabi — allowed for a childless wife to give her female slave to her husband as a concubine, with the resulting child being legally considered the wife’s. Sarai is operating within an accepted cultural norm. She is not inventing something morally outrageous by ancient Near Eastern standards.

But cultural acceptability is not the same as theological faithfulness. Sarai has now done what Abram did in Egypt: she has tried to engineer the LORD’s promise by her own means. The LORD had said the offspring would come. Sarai cannot wait. She finds a way to manufacture an offspring through her slave. The seed-line that has been hanging by a thread of barrenness is about to be redirected, by human ingenuity, through a different woman.

Notice the verbs in this passage. And Abram listened to the voice of Sarai. The phrase is loaded. The same construction appeared in Genesis 3: Because you have listened to the voice of your wife and have eaten of the tree of which I commanded you, the LORD said to Adam (Genesis 3:17). Abram, like Adam, listens to the voice of his wife in a moment when he should have been listening to the voice of the LORD. The narrator is signaling that something is going wrong. The pattern of Eden is reappearing in the household of Abram. The issue is not that the wife’s voice was heard. The issue is whose voice was given final weight when the LORD had spoken differently.

So after Abram had lived in Canaan for ten years, Sarai, Abram’s wife, gave Hagar, her Egyptian servant, to her husband to be his wife. He slept with Hagar, and she became pregnant. Once Hagar realized she was pregnant, she despised Sarai.

Ten years have passed since Abram came into the land. Ten years of waiting. Ten years of unfulfilled promise. The waiting has become unbearable for Sarai. She gives Hagar to Abram. Hagar conceives.

And the conflict begins immediately.

He slept with Hagar, and she became pregnant. Once Hagar realized she was pregnant, she despised Sarai. Then Sarai said to Abram, “You have brought this wrong on me! I gave my servant into your embrace, but when she realized that she was pregnant, she despised me. May the LORD judge between you and me!”

Hagar, having conceived, looks with contempt on Sarai. The slave-woman who can bear a child now looks down on the wife who could not. The social dynamics of the household have shifted. Hagar is no longer just a slave; she is the mother of Abram’s child. Sarai is, in her own house, suddenly displaced. The plan that was supposed to give Sarai an heir has instead given her a rival.

Sarai turns on Abram. May the wrong done to me be on you! The plan was hers. The contempt is from Hagar. But the wrong, she says, is Abram’s. This is a household in chaos. Each person blames another. The unity of Abram and Sarai’s marriage has been strained by the introduction of a third party into the marriage bed. The household of the man through whom all the families of the earth will be blessed is, at this moment, a domestic disaster.

Abram said to Sarai, “Since your servant is under your authority, do to her whatever you think best.” Then Sarai treated Hagar harshly, so she ran away from Sarai.

Abram’s response is, by any honest reading, weak. Your servant is in your power; do as you please to her. He hands Hagar back to Sarai’s authority. He does not protect Hagar. He does not insist on a fair resolution. He hands the situation over to his wife and effectively abandons the slave-woman who is carrying his child.

Sarai then deals harshly with Hagar — the Hebrew verb suggests oppressive, afflicting treatment. The same verb will later be used of the Egyptians’ treatment of the Israelites in slavery. Sarai, the woman whose own descendants will one day be afflicted by Egyptian taskmasters, is here afflicting her own Egyptian slave. The mistreatment is sharp enough that Hagar flees. She runs into the wilderness.

This is the first major moment of unbelief in the Abrahamic narrative. The first chapter showed us Abram believing the LORD; the second chapter shows us Abram and Sarai failing to wait for the LORD. The two postures sit side by side in this session. Faith and unbelief, in the same patriarch, only a chapter apart. The seed-line is preserved by grace alone. The patriarchs are no models of consistent faithfulness. They are the recipients of a faithful God.

The God Who Sees

Now the chapter turns. The narrative has been moving with Sarai and Abram; it now follows Hagar.

The angel of the LORD found Hagar near a spring of water in the wilderness—the spring that is along the road to Shur. He said, “Hagar, servant of Sarai, where have you come from, and where are you going?” She replied, “I’m running away from my mistress, Sarai.”

Hagar is alone in the wilderness. She is pregnant. She has been mistreated. She has no resources. She is heading, the text suggests, back toward Egypt — Shur is on the road toward her homeland. She has no future that she can see. The text is unflinching about her situation: she is a slave, foreign, female, pregnant, and fleeing.

And the LORD finds her.

The angel of the LORD. The Hebrew is mal’akh YHWH — the messenger of the LORD. The phrase will recur throughout the Old Testament, often in contexts where the messenger is so closely identified with the LORD Himself that the distinction blurs. Some Christian readers — including many in the Lutheran tradition — have understood the angel of the LORD in passages like this one to be a pre-incarnate appearance of the Son of God. Whether or not we make that identification firmly here, we can say this much: the angel of the LORD speaks as God, acts as God, and is received by Hagar as God.

The LORD finds Hagar by a spring of water. The wilderness, for a fleeing slave, is the place where death seems likely. The spring is a place of survival. The LORD meets Hagar at the spring that has, perhaps, saved her life. He meets her at the very place where she has stopped to drink.

Hagar, servant of Sarai, where have you come from and where are you going? The LORD knows her name. The LORD knows her status. The LORD knows her situation. The questions are not for the LORD’s information; they are for Hagar’s. They invite her to articulate where she is. I am fleeing from my mistress Sarai.

Then the angel of the LORD said to her, “Return to your mistress and submit to her authority. I will greatly multiply your descendants,” the angel of the LORD added, “so that they will be too numerous to count.” Then the angel of the LORD said to her, “You are now pregnant and are about to give birth to a son. You are to name him Ishmael, for the LORD has heard your painful groans.

The LORD speaks three things to Hagar. First, the hard word: Return to your mistress and submit to her. This is not the answer Hagar wants. She has fled to escape Sarai’s harsh treatment. The LORD does not bless her flight. He sends her back. The pastoral severity of this command should not be missed — the LORD does not approve of Sarai’s harshness, but He also does not endorse Hagar’s escape. The LORD calls her back into the difficult relationship in which she has been placed, with the promise of His presence and provision within it.

Second, the great promise: I will surely multiply your offspring so that they cannot be numbered for multitude. This is the same kind of promise the LORD has been making to Abram. The slave-woman is given a promise of her own, in language that echoes the language of the patriarchal blessing. Hagar is not outside the LORD’s care. She has her own promise, her own future, her own innumerable descendants.

Third, the naming: You shall call his name Ishmael, because the LORD has listened to your affliction. The name Ishmael means God hears — yishma’ (he hears) plus El (God). The LORD has heard Hagar’s affliction. He has not been deaf to the cries of the slave-woman. He has named her son after His own hearing of her pain.

And then the prophecy about Ishmael: He shall be a wild donkey of a man. The image is not necessarily negative — the wild donkey is free, untamed, untouchable by the systems of empire. His hand against everyone and everyone’s hand against him. The Ishmaelites will be a contentious people; the relationships will be hard. He shall dwell over against all his kinsmen. He will not be assimilated into any other family. He will keep his own identity.

The Ishmaelite peoples — the Arab peoples of subsequent history — trace their ancestry, by their own tradition and by the biblical record, to Ishmael. The LORD’s promise to Hagar has been kept across the centuries. Ishmael’s descendants are many. They have remained a distinct people. The hand-against-everyone dynamic has played out in many ways across history. The LORD spoke truly to Hagar in the wilderness.

So Hagar named the LORD who spoke to her, “You are the God who sees me,” for she said, “Here I have seen one who sees me!” That is why the well was called Beer Lahai Roi. (It is located between Kadesh and Bered.)

Hagar gives the LORD a name. You are a God of seeing — El Roi in Hebrew. She is the first person in Scripture to bestow a name on God. The patriarchs receive names from the LORD; they do not give names to Him. Hagar, the foreign slave-woman, the discarded concubine, the mother of the not-promised son — she names the LORD. El Roi. The God who sees me.

The naming is profoundly theological. The slave-woman who has been used and discarded by everyone around her — by Sarai, who used her body for a workaround; by Abram, who handed her back to be mistreated; by the social structure of the ancient Near East, which gave her no standing of her own — this woman discovers that the LORD has been looking at her all along. Truly here I have seen him who looks after me. The unseen one is seen. The forgotten one is remembered. The cast-out one is met.

This is one of the most pastorally rich moments in all of Genesis. The God of Abram is also the God of Hagar. The God of the patriarch is also the God of the slave. The God who chose Abram for the seed-line is also the God who hears the cry of the woman in the wilderness. The promise to bless all the families of the earth in Abram includes Hagar and her son. El Roi — the God who sees.

The well is named Beer-lahai-roi — the well of the Living One who sees me. It will reappear later in Genesis. Isaac will eventually live there for a time (Genesis 24:62; 25:11). The well that marked Hagar’s encounter with God becomes one of the regular residence places of the son of promise. The geographies of the two sons intersect at the spring where the LORD met Hagar.

So Hagar gave birth to Abram’s son, whom Abram named Ishmael. (Now Abram was 86 years old when Hagar gave birth to Ishmael.)

The chapter ends with Ishmael’s birth. The boy is born. Abram is eighty-six. The wait that has begun in Genesis 12 — Abram leaving Haran at seventy-five — has now extended eleven years. Eleven years from the call to the first son. And the son is not Sarai’s. The promise of the seed is not yet fully kept. Ishmael is a real son, with a real future, blessed by the LORD with a great nation of his own. But he is not the son of promise. That son is still waiting to be born.

Counted as Righteousness

The session began with Abram believing the LORD and the LORD counting it to him as righteousness. We have now followed the patriarch through one chapter of belief and one chapter of unbelief. We need to come back to the foundational verse and develop it more fully.

And he believed the LORD, and he counted it to him as righteousness (Genesis 15:6).

Paul will quote this verse five times across his letters. Each time he uses it to make a different argument, but always in defense of the same doctrine: that the sinner is justified before God by faith alone, apart from works.

In Romans 4, Paul appeals to Genesis 15:6 to prove that Abraham was justified by faith before he had any record of works to commend him. For what does the Scripture say? “Abraham believed God, and it was counted to him as righteousness.” Now to the one who works, his wages are not counted as a gift but as his due. And to the one who does not work but believes in him who justifies the ungodly, his faith is counted as righteousness (Romans 4:3–5). Paul’s argument is precise. Abraham’s righteousness was counted — imputed, credited, reckoned. It was not earned. It was not paid as a wage. It was given as a gift. And the gift was given to a man who, on Paul’s reading, was ungodly at the moment of justification — that is, not yet possessing the moral excellence that righteousness would require. The righteousness came first as a divine declaration, on the basis of faith; the moral transformation followed.

In Romans 4, Paul also makes the crucial timing argument. He notes that Genesis 15:6 — the verse in which Abram is counted righteous — comes before Genesis 17, in which Abram receives the covenant of circumcision. The chronology matters. Abram was counted righteous when he was still uncircumcised. His justification did not depend on circumcision. It did not depend on his ceremonial standing in the covenant. It depended on his faith. So that he might be the father of all who believe without being circumcised, that righteousness might be counted to them as well (Romans 4:11). Paul’s point is that justification by faith is available to Gentiles — uncircumcised believers — because Abraham himself was justified by faith before he was circumcised. The pattern of Genesis 15:6 reaches across the covenantal sign and includes every believer who shares Abraham’s faith.

In Galatians 3, Paul makes a similar argument against the Galatian Judaizers who were insisting that Gentile believers must be circumcised and observe the Mosaic law. Just as Abraham “believed God, and it was counted to him as righteousness.” Know then that it is those of faith who are the sons of Abraham. And the Scripture, foreseeing that God would justify the Gentiles by faith, preached the gospel beforehand to Abraham, saying, “In you shall all the nations be blessed” (Galatians 3:6–8). The same logic: justification was by faith for Abraham; it remains by faith for everyone who shares Abraham’s faith; the Gentiles are included.

James, in his letter, also quotes Genesis 15:6, but with a different emphasis. Was not Abraham our father justified by works when he offered up his son Isaac on the altar? You see that faith was active along with his works, and faith was completed by his works; and the Scripture was fulfilled that says, “Abraham believed God, and it was counted to him as righteousness” (James 2:21–23). James, in context, is countering an antinomian misuse of justification by faith — the suggestion that, since we are justified by faith, our works do not matter. James insists that genuine faith always produces works; faith without works is dead. He is not contradicting Paul. Paul addresses how a sinner is declared righteous (by faith, apart from works). James addresses how genuine faith shows itself (by works, as the necessary fruit of living faith). Paul and James are agreeing on what justification by faith is. They are arguing for the same gospel from different angles.

The Lutheran tradition has held these readings together. Article IV of the Augsburg Confession states the doctrine of justification by faith with Pauline clarity. The Apology of the Augsburg Confession then deals with James and shows that the apparent tension is resolved when we understand what each writer is addressing. Luther’s commentary on Galatians develops Paul’s argument from Genesis 15:6 at length. The conviction that runs through all of this Lutheran development is straightforward: Genesis 15:6 is the gospel preached in advance. The doctrine of justification by faith is not a New Testament invention. It is the doctrine the Old Testament itself taught about Abram. The Reformers were not innovators. They were recovering what was always there.

The pastoral implication is enormous. The Christian who hears the gospel and trusts Christ is justified on exactly the same basis as Abraham was — by faith counted as righteousness. There is one gospel through Scripture. There is one mode of justification. Abraham was not saved by works and we by faith; Abraham was saved by faith looking forward to Christ, and we are saved by faith looking back to Christ. The basis is one. The mode is one. The God who counted Abraham’s faith as righteousness counts our faith as righteousness in exactly the same way.

This is why Genesis 15:6 is so important. It is not merely an Old Testament verse that happens to be quoted in the New Testament. It is the verse on which the doctrine of justification by faith rests, biblically. It is the verse Luther returned to over and over. It is the verse that, when properly heard, sets the conscience free from every form of works-righteousness. The reckoning is the LORD’s. The righteousness is a gift. The believer who trusts the promise of God in Christ is, by the LORD’s own reckoning, righteous.

And he believed the LORD, and he counted it to him as righteousness. Eleven words. The heart of the gospel. The foundation of the Reformation. The article on which the church stands or falls.

Gathering the Threads

Genesis 15 and Genesis 16 have given us the two great theological centers of the Abrahamic narrative.

The first is Genesis 15:6 — and he believed the LORD, and he counted it to him as righteousness. The verse stands as the foundational Old Testament expression of justification by faith. Paul will quote it five times across his letters; James will quote it once; the entire Lutheran Reformation will rest, in part, on its claim that the sinner is justified before God by faith alone, apart from works. The righteousness is imputed. The reckoning is the LORD’s. The believer trusts; the LORD credits. The same gospel that justified Abram justifies every Christian who trusts the promise of God in Christ today.

The second is the covenant ceremony. The LORD passes alone, in the form of smoke and fire, between the divided pieces. The covenant is unilateral. The LORD binds Himself, by Himself, to the consequences of broken covenant. The smoke and fire of the patriarchal night foreshadow the smoke and fire of Calvary, where the LORD’s own Son would bear the curse of the broken covenant in His own body for the sake of His people (Galatians 3:13). The pattern is the LORD’s: He bears the curse Himself. He pays the price Himself. The covenant is one-sided in its making and one-sided in its keeping. The Christian who trusts the gospel rests on a covenant that the LORD has, from the beginning, secured at His own cost.

The third is the dark side of the same narrative: the failure to wait. Sarai gave Hagar to Abram. Abram listened to the voice of his wife. The seed-line was supposed to come through Sarai; the seed-line was tried, instead, through Hagar. The household fell into bitter conflict. Hagar fled. The pattern of the patriarchs is established: they believe the LORD on Wednesday and try to engineer the LORD’s promises by their own means on Thursday. The grace is greater. The promise is kept anyway. But the cost of the unbelief is real, and the family lives with the consequences for centuries.

And the fourth is the great pastoral moment in the wilderness: El Roi. The God who sees Hagar. The God of Abram is also the God of the slave-woman fleeing into the wilderness. The God who chose the patriarchal seed-line is also the God who hears the cry of the discarded. The promise to bless all the families of the earth in Abram includes the slave-girl who has been thrown out of his household. The well of Beer-lahai-roi — the well of the Living One who sees me — stands as a marker in the geography of the Promised Land, a witness that the LORD’s care reaches all the way to the most marginal of His creatures.

Next session, we turn to Genesis 17 and Genesis 18. The LORD will appear to Abram again — thirteen years after Ishmael’s birth — and will establish the covenant of circumcision. He will change Abram’s name to Abraham (father of a multitude) and Sarai’s name to Sarah (princess). He will make explicit that the promised son will come through Sarah, not through Hagar. Then in Genesis 18, three visitors will come to Abraham at the oaks of Mamre — visitors who turn out to include the LORD Himself. Sarah will laugh at the promise of a son. And the LORD will reveal to Abraham what is about to happen to Sodom. Abraham will then engage in one of the most remarkable intercessions in the Old Testament — pleading for the city for the sake of any righteous people who might be in it.

For Discussion

The following questions are for group discussion or personal reflection.

And he believed the LORD, and he counted it to him as righteousness. This single verse is the foundational Old Testament text on justification by faith. What does it mean that Abram’s righteousness was counted to him by the LORD — not earned, not worked for, but credited as a gift? How does this shape your understanding of how you stand before God?
The covenant ceremony in Genesis 15 ends with the LORD alone passing between the divided animals, while Abram is in a deep sleep. The covenant is unilateral — the LORD binds Himself to its consequences. How does this image point forward to the cross, where the LORD’s own Son bore the consequences of broken covenant? How does it shape your assurance that God’s promises will be kept?
The iniquity of the Amorites is not yet complete. The LORD tells Abram that judgment on the Canaanites will not come for four hundred years — because their wickedness is not yet fully ripe. What does this verse teach us about God’s patience with peoples and nations? What does it teach us about the moral governance of all human history under His hand?
Sarai’s plan to give Hagar to Abram was culturally acceptable in the ancient Near East. But cultural acceptability is not the same as theological faithfulness. Where do believers today face similar pressures — to do what is culturally normal even when Scripture would call us to wait, to trust, or to refuse?
El Roi — the God who sees me. Hagar, a foreign slave-woman in the wilderness, becomes the first person in Scripture to give God a name. What does it mean that the God who chose Abram is the same God who pursued the discarded slave-woman to a well in the wilderness? How does this shape your understanding of the LORD’s care for the marginalized?
Paul, in Romans 4, points out that Abram was counted righteous before he was circumcised. The justification did not depend on the covenantal sign; it depended on the faith. How does this argument shape your understanding of the relationship between justification and the sacraments? In what way is your baptism a sign and seal of the same justification by faith that Abram received before circumcision?

Looking Ahead

Session 14 turns to Genesis 17 and Genesis 18. The LORD will appear to Abram thirteen years after Ishmael’s birth and will formally establish the covenant of circumcision. He will change Abram’s name to Abraham — father of a multitude — and Sarai’s name to Sarah — princess. He will make explicit that the promised son will come through Sarah, not through Hagar, and that his name shall be Isaac (laughter).

In Genesis 18, three visitors will appear at the oaks of Mamre. Abraham will receive them with extraordinary hospitality. As they eat, one of them will turn out to be the LORD Himself, with two angelic companions. The LORD will reaffirm the promise of a son for Sarah — and Sarah, listening from the tent, will laugh in disbelief. The LORD will then reveal to Abraham what is about to happen to Sodom and Gomorrah. And Abraham will engage in one of the most remarkable intercessions in the Old Testament — bargaining with the LORD for the city, asking whether He would spare it for fifty righteous people, for forty-five, for forty, for thirty, for twenty, for ten.

Before next session, read Genesis 17 and Genesis 18 in full. As you read, watch for: the new names (Abraham, Sarah, Isaac); the institution of circumcision as the sign of the covenant; Abraham’s hospitality to the three visitors; Sarah’s laughter; the LORD’s question Is anything too hard for the LORD?; and the long intercession for Sodom.

Closing Prayer

Lord God, who took Abram outside on a starlit night and asked him to count the stars — who promised him innumerable offspring when his wife was barren — who counted his faith to him as righteousness — we worship You. You are the God who declares the sinner righteous on the basis of faith, who gives us the righteousness of Christ as a pure gift, who has, in Your Son, borne the curse of the broken covenant Yourself. Thank You for the smoke and fire that passed between the divided pieces, pointing forward to the cross on which Your Son bore the curse of the broken covenant in His own body for our sake. Thank You for the well in the wilderness where You met Hagar, and for the name she gave You — El Roi, the God who sees. Where we, like Sarai, have grown impatient with Your timing and tried to engineer Your promises by our own means, forgive us and bring us back to trust. Where we, like Hagar, have fled into the wilderness in despair, find us at our spring and remind us that we are seen. And where we, like Abram, are tempted to listen to other voices when Yours is the only voice that finally matters, ground us in the gospel of justification by faith. Count us righteous, not because of our works, but because of Your Son’s righteousness reckoned to us as a gift. Through Jesus Christ our Lord, in whom all Your promises are Yes and Amen, with the Father and the Holy Spirit, one God, world without end. Amen.