Love One Another
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Scripture: 1 John 3:11–24
Read 1 John 3:11–24 before proceeding. Keep your Bible open throughout this session.
By this we know love, that He laid down His life for us, and we ought to lay down our lives for the brothers.
1 John 3:16
The Message from the Beginning
John now returns to the theme he has been circling since the opening of chapter two. For this is the message that you have heard from the beginning, that we should love one another. Not a new teaching. Not a fresh discovery of the false teachers. The message his readers have heard from the beginning of their Christian lives is precisely this: love one another. The simple, ancient, familiar calling that has been the Christian’s from the first moment of his walk with Christ.
John has been building toward this. In the first chapter, he grounded the Christian life in fellowship with the Father and the Son through the apostolic Gospel. In the first half of chapter two, he gave obedience and love as the marks of the one who truly knows Christ. In the second half of chapter two, he exposed the antichrist spirit and grounded his readers in the anointing and the Word they had heard from the beginning. In the first half of chapter three, he established their identity as children of God and addressed the difficult question of sin in the Christian life. Now, in this passage, he turns to love, love of the brother, and develops it with unusual force.
The force with which John develops the theme is worth noting. This is not a pleasant sentiment loosely attached to the Christian life. Love of brother is, for John, one of the central tests of whether the Christian life is real. He will draw the sharpest possible contrast: Cain who slew his brother, Christ who laid down His life for His brothers. He will give the definition of love: we know what love is because Christ laid down His life for us. He will apply it pointedly: the one who has the world’s goods and sees his brother in need without acting is not really abiding in God’s love. And he will connect all of this to boldness before God, to answered prayer, to the keeping of the commandment to believe in the name of His Son Jesus Christ and to love one another.
In this session we will walk through all of this carefully. We will begin with the stark contrast between Cain and Christ. We will examine the shocking claim that anyone who hates his brother is a murderer. We will work through the definition of love in verse sixteen and its practical application in the verses that follow. We will reach the beautiful passage on the reassurance of the Christian whose heart condemns him, where John offers one of the most pastorally healing statements in the letter: God is greater than our hearts, and knows everything. And we will close with the connection between faith and love in the single commandment that summarizes the Christian life: believe in Jesus Christ and love one another.
Cain and Christ
John draws an immediate, deliberate contrast. We should love one another. We should not be like Cain, who was of the evil one and murdered his brother. And why did he murder him? Because his own deeds were evil and his brother’s righteous.
The choice of Cain is pointed. Cain is the first murderer in Scripture. He is the first man whose relationship with his brother went fatally wrong. And his story comes in the book of Genesis, the beginning, the book that establishes the basic patterns of human life before God. From the beginning, John is saying, the opposite of the message we have heard has been visible in the world. The one who did not love his brother killed him. That is where hatred of brother ends, in its fullest development. And John is pointing to the deep connection between the inward disposition and the outward act. Hatred is not a harmless feeling. It is on the path that leads, if unchecked, to the destruction of the one hated.
Why Cain Killed Abel
John gives a specific reason for the murder. Cain’s own deeds were evil, and his brother’s righteous. The murder was not about Abel. It was about what Abel’s righteousness revealed about Cain. Abel’s faithful offering, accepted by God, exposed the unfaithfulness of Cain’s offering, which God did not accept. And Cain could not bear the exposure. He could not let his brother’s righteousness stand as a judgment on his own. So he removed the brother. By killing him.
This psychology is recognizable across human history, and it is recognizable in our own lives. The one who lives in a pattern of sin often resents the one whose life shows up the sin for what it is. The unfaithful person resents the faithful. The compromised person resents the uncompromised. The lazy person resents the diligent. The impure person resents the pure. In less extreme forms, this can express itself as envy, as gossip, as quiet hostility, as persistent criticism. In its fullest form, in Cain and in the world’s hatred of Christ, it expresses itself as the removal of the one whose goodness is unbearable.
Do Not Be Surprised
John applies this to his readers’ experience. Do not be surprised, brothers, that the world hates you. The world does not love its own; it hates those whose righteousness exposes its sin. Christians in every age have found this to be true. The world’s relationship to those who bear the name of Christ is often shaped less by what the Christians do wrong and more by what the Christians’ faithful lives reveal about the world’s own patterns. When a society is committed to certain forms of self-indulgence, the Christians who refuse those forms become uncomfortable reminders. And the discomfort often turns to hostility.
This does not excuse Christians from self-examination. We are often genuinely at fault in how we bear ourselves in the world. We can be hypocritical, harsh, self-righteous, and unloving, and where we have given the world real cause for its criticism, we should repent. But some portion of the world’s hostility to Christians is not about Christian failures; it is about the same dynamic John identified in Cain. The righteousness of the faithful exposes the unrighteousness of the unfaithful, and the exposure is sometimes more than the unfaithful can bear. When this dynamic is what the Christian is experiencing, John’s word is: do not be surprised. This is the Cain pattern, and it has been present since the beginning.
We Have Passed from Death to Life
John now draws the positive counterpart. We know that we have passed out of death into life, because we love the brothers. Whoever does not love abides in death. Everyone who hates his brother is a murderer, and you know that no murderer has eternal life abiding in him.
Here is another of John’s tests. The Christian knows she has passed from death to life because she loves the brothers. The presence of love is not the mechanism by which she earned the passage from death to life: that passage was accomplished by Christ’s blood and applied to her by grace through faith. The love is the evidence that the passage has occurred. The one in whom the new life is present bears the marks of that life. And love of brother is one of the clearest marks.
The Startling Equation
Then John makes a statement that shocks most readers. Everyone who hates his brother is a murderer, and you know that no murderer has eternal life abiding in him. John is equating hatred with murder. This is not a soft restatement or a rhetorical exaggeration. John is saying that the inward orientation of hate shares the moral category with the outward act of murder. The one contains the seed of the other. Cain’s hatred of his brother preceded and produced his murder of his brother; the murder was simply the full flowering of the hate.
This is the same teaching Jesus gave in the Sermon on the Mount. You have heard that it was said to those of old, You shall not murder; and whoever murders will be liable to judgment. But I say to you that everyone who is angry with his brother will be liable to judgment. Jesus located the root of murder in the heart’s anger toward the brother, and declared the heart’s anger itself to be under the same judgment that falls on the outward act. John is saying the same thing in slightly different words. The commandment against murder reaches further than we usually admit. Its reach extends into the inward dispositions that, left to themselves, would become murder if the circumstances allowed.
What This Means for Us
This is a searching word for every Christian. Hatred of a brother (settled, cherished, nurtured hostility toward a fellow Christian) is not a minor failure. It is a violation of the commandment against murder, at the level of the heart. And John’s statement that no murderer has eternal life abiding in him is not an academic observation; it is a summons. Christians who have allowed hatred of a brother to settle into their hearts are not in a safe spiritual place. They are in a place where the new life is being directly contradicted by what they are cultivating inwardly.
The pastoral application is not to create terror in Christians who have occasional anger toward another Christian: that is not what John is addressing. He is addressing settled hatred, the kind of hostility that has put down roots and is shaping the direction of a life. If you find yourself in that place regarding another Christian (whether a fellow church member, a family member, someone who has wronged you), John’s word is that this cannot coexist with the eternal life you claim. Repentance is called for. Confession. Active prayer for the one you are tempted to hate. Working toward reconciliation where it is possible, and releasing the resentment where it is not. The Christian cannot hold onto hatred of a brother and onto her standing in Christ at the same time. One will eventually displace the other.
What Love Is
John now gives one of the great definitional statements in the New Testament. By this we know love, that He laid down His life for us, and we ought to lay down our lives for the brothers.
The verse is astonishing in its compression. By this we know love. This, the laying down of Christ’s life for us, is what love is. Not the sentiment we might call love. Not the warm affection. Not the pleasant feeling. Love, as God has defined it through His Son’s action, is the laying down of life for another. The cross shows us what love actually is. Everything else that might be called love must be measured against this definition.
He Laid Down His Life
The specific verb John uses, laid down, comes from the Gospel of John, where Jesus uses it repeatedly in the Good Shepherd discourse. I am the good shepherd. The good shepherd lays down his life for the sheep. No one takes it from me, but I lay it down of my own accord. The laying down is voluntary, willing, chosen. It is not something done to Christ; it is something He does for us. The initiative is His. The willingness is complete. And the action is the defining act of what God has revealed love to mean.
This shapes everything about how Christians understand love. The world has many definitions of love, most of them centered on what the lover receives or feels. The biblical definition is centered on what the lover gives. Love is not primarily a state of being loved; it is an action of giving oneself for another. The cross has defined the word permanently. Whenever Christians speak of love (love of spouse, love of parent, love of neighbor, love of enemy), the definition we are working with has been set by the one who laid down His life for us. And every smaller act that can be called love participates in the meaning of that central act.
We Ought to Lay Down Our Lives
And John draws the implication that few of us fully absorb. We ought to lay down our lives for the brothers. The word ought is a word of moral obligation, of what is fitting or right. Because Christ has loved us in this way, the shape of life for those who have received His love is the same shape: the laying down of our lives for the brothers.
Most of us will not be called to die physically for a brother, though some Christians across history have been. But the laying down of life is not limited to martyrdom. The Greek word for life here is psyche, which includes more than biological existence. It includes the self, the ego, the ambitions, the desires, the comforts, the preferences that make up a life. To lay down our psyche for the brother is to surrender these, in small and large ways, for his sake. The parent who sets aside her own plans for the sake of her child. The spouse who defers his preferences for the sake of his marriage. The congregation member who serves without recognition for the sake of the body. The Christian who gives time, money, energy, or comfort to help another Christian in need. Each of these is a real laying down of life: a death, in miniature, that participates in the meaning of the one great death on the cross.
This is a high calling. And it is the calling of every Christian, not just a special class of heroes. The ordinary Christian life is a life of continual small deaths: of deferring, surrendering, giving up preferences, setting aside convenience, enduring discomfort for the sake of another. When we are doing this well, we are loving as Christ loved. When we are refusing this, we are refusing to love as Christ loved. And John’s word is that this pattern of laying down is what love actually is, whatever other shapes our culture’s definitions may take.
The Practical Test
John immediately applies the principle to concrete life. But if anyone has the world’s goods and sees his brother in need, yet closes his heart against him, how does God’s love abide in him? Little children, let us not love in word or talk but in deed and in truth.
The test is specific and uncomfortable. The Christian who has what he needs, who sees a brother in need, and who closes his heart against that brother, how can he claim that God’s love abides in him? John is not setting up an impossible standard. He is pointing to an obvious inconsistency. The one who has been so lavishly loved by God, whose needs the Father has so generously supplied, who has received more than he can begin to count: if that person sees a brother in need and refuses to respond, something has gone wrong. Either the love received is not being let through to the brother, or the love received was never really received. Either way, the claim to be abiding in God’s love is badly compromised.
Love in Deed and in Truth
John’s summary phrase is striking. Let us not love in word or talk but in deed and in truth. Real love is visible, actual, practical. It shows up in what is actually done. Talking about love is not the same as loving. Having warm feelings toward the needy is not the same as helping them. The love John is describing takes shape in concrete action: meeting needs, giving help, offering presence, making sacrifices that actually change the life of the loved one.
This does not mean feelings and words are irrelevant. They are not; Christians should feel love for their brothers and should speak words of love to them. But the feelings and words are not a substitute for action. The test is whether the love actually shows up in deeds when the circumstances call for action. The love that stays only in the realm of feeling or speech, never reaching the level of costly action, is not the love John is describing. It is a sentiment, a word, a posture, but not the love that lays down life for the brother.
The Challenge for Comfortable Christians
This verse is particularly challenging for Christians living in prosperous circumstances, because the test John gives requires ongoing practice. The Christian living in material comfort sees many brothers in various kinds of need: financial, relational, spiritual, emotional, physical. Some of these needs are far away; some are close. Some require money; some require time; some require presence; some require forgiveness. John’s test applies to all of these. The Christian is called to have a heart that is open rather than closed to the brother in need, and to respond with deeds that actually meet the need when the meeting is within our power.
This does not mean Christians are required to meet every need they see. No one can. It means Christians are required to have a disposition of openness to the needs they encounter, and to respond where they can. The closing of the heart is the danger John names: the settled decision to not be troubled by the brother’s need, to not be moved by it, to not let it require anything of us. This closing is incompatible with the Gospel that has reached us. The God who did not close His heart against us when we were in our deepest need calls us to mirror His openness toward the brothers He has given us.
God Is Greater Than Our Hearts
John now offers one of the most pastorally healing statements in the letter. By this we shall know that we are of the truth and reassure our heart before Him; for whenever our heart condemns us, God is greater than our heart, and He knows everything.
The context is significant. John has just laid out a demanding test: love for the brother shown in deeds and in truth. And he knows how Christians hear such tests. Many hear them and the heart rises up in condemnation. I have not loved enough. I have closed my heart too many times. My deeds of love do not match my professions. I am not who I should be. The tests intended for assurance can, if received badly, become engines of despair. John anticipates this, and he addresses it directly.
When the Heart Condemns
John’s word is that the heart’s condemnation is not the last word for the Christian. When our heart condemns us (when conscience rises up and accuses us, when we feel the weight of our failures, when we cannot meet our own standards let alone God’s), there is a higher court. God is greater than our hearts, and He knows everything. The conscience is not infallible. The heart, while it is often right in its accusations, is sometimes wrong. And in either case, God’s knowledge is more complete than ours.
This is a word of profound pastoral comfort. The Christian whose conscience is sensitive (who feels her failures sharply, who carries the weight of her own inadequacy) is told that God is greater than her heart. He sees what she sees, and more. He knows her failures, yes, but He also knows the love of His Son that has covered them. He knows the trajectory of her life, including the parts she cannot see herself. He knows the work of His Spirit in her that is incomplete but real. He knows everything: including everything about His own grace toward her.
Two Ways to Hear This
The passage can be heard in two different ways, and both are present in the interpretive tradition. The first hearing emphasizes comfort: God is greater than our hearts in a merciful sense. When the heart condemns unjustly, God’s mercy knows everything including our true standing in Christ. The second hearing emphasizes warning: God is greater than our hearts in an exacting sense. When the heart does not condemn, but should, God knows more than the heart acknowledges and the deeper reality still stands.
Probably both dimensions are present in John’s words, because both are true of God’s knowledge compared to ours. But in the flow of the passage, the emphasis seems to be on comfort. John has been developing the marks of the children of God, giving his readers tools by which to recognize the reality of their standing. Now he turns to the ones whose hearts accuse them and says, the accusation is not the end of the matter. God is greater. Whatever failings the conscience names, God’s knowledge includes those failings within the larger reality of His Son’s love, and this larger reality is the final reality for the one who is in Christ.
Reassure Our Hearts
The Christian’s hearing this rightly produces the reassurance John intends. Not a lazy dismissal of the conscience’s voice: the conscience often speaks truth that needs to be heeded. But the recognition that conscience is not God, and that even a true accusation from conscience is answered by the greater reality of God’s grace in Christ. The Christian whose heart is condemning her can confess whatever is true in the accusation, receive the cleansing of Christ’s blood, return to the work of loving the brothers in deed and in truth, and rest in the fact that God is greater than her heart. This is the pastoral rhythm of the Christian life. Conscience accuses. Grace cleanses. The Christian returns to her calling. God knows everything, including that His grace is sufficient.
Confidence Before God
John moves on to the positive side. Beloved, if our heart does not condemn us, we have confidence before God; and whatever we ask we receive from Him, because we keep His commandments and do what pleases Him.
The Christian whose heart does not condemn (who is, in the ordinary pattern of her life, living in keeping with Christ’s commandments) has a particular kind of confidence before God. Parrhesia again, the same word we met at the beginning of the passage. The Christian has the boldness, the openness, the freedom of speech that belongs to one who has a right to be where she is. And this confidence has practical implications for prayer.
Prayer and Confidence
Whatever we ask we receive from Him. This is a striking statement, and it needs to be read carefully in the full context of John’s letter and of the New Testament’s teaching on prayer. John is not teaching a vending-machine God who grants whatever Christians request. He is teaching that the Christian who is walking in the confidence of a life oriented toward Christ’s commandments has a particular access to the Father in prayer. Her prayers are not hindered by unrepented sin or by settled hatred of a brother. Her prayers arise from a life that is aligned, however imperfectly, with the Father’s purposes. And such prayers are heard and answered. Yet the ground on which any Christian prays is never her own worthiness. The Large Catechism teaches that we pray because God has commanded it and promised to hear, not because we have made ourselves worthy (LC III). The Christian with the weakest record and the most troubled conscience may still call on the Father in Jesus’ name.
John will develop this further in chapter five, where he says that whatever we ask according to God’s will, He hears. The qualifier according to God’s will is not opposed to what John says here; it is the fuller development of what confidence before God actually means. The Christian in whom God is at work prays prayers that are, in their deepest direction, aligned with God’s purposes. And these prayers are heard. The conditioning is not the precision of the request but the orientation of the one praying. A Christian whose life is directed toward the Father’s purposes will pray requests that the Father can grant, because the requests themselves have been shaped by the relationship with the Father.
Keeping His Commandments and Pleasing Him
And John names the conditions that produce this confidence. Because we keep His commandments and do what pleases Him. This is not a return to legalism. The keeping of commandments and pleasing of God is not what earns access to the Father; it is the fruit of a relationship that already exists. The Christian who keeps the commandments does so because she has been born of God, because His seed abides in her, because the new life produces the new pattern. And this new pattern, which is the Spirit’s work in her, produces the particular confidence John describes.
Christians who feel that their prayer lives are weak sometimes conclude that they need to become better prayers: more disciplined, more fervent, more knowledgeable about prayer. John’s teaching suggests a different diagnosis. The prayer life is weak when the overall life is fragmented: when there are patterns of sin that remain unaddressed, when hatred of a brother is cherished, when the overall orientation of life is scattered across competing masters. The remedy is not first a better technique of prayer. It is repentance: to confess what needs confessing, to lay down the grudge, to receive again the forgiveness Christ gives, and to return to loving the brothers in deed and in truth. From that renewed life, prayer flows more freely. And the confidence that accompanies it rests where all Christian confidence rests: on Christ’s command and promise, received by a heart that is no longer at war with what it is asking.
The Single Commandment
John now gives what sounds like a single, summary commandment. And this is His commandment, that we believe in the name of His Son Jesus Christ and love one another, just as He has commanded us. Whoever keeps His commandments abides in God, and God in him. And by this we know that He abides in us, by the Spirit whom He has given us.
Notice the singular. This is His commandment. Not commandments. One commandment, with two inseparable aspects. Believe in the name of His Son Jesus Christ. And love one another. These two together make up the single calling of the Christian life. Faith and love are joined in the single command, because they flow from one another. The faith that trusts in Christ produces love for the brothers. The love for the brothers is the sign that the faith is real. Neither can exist in isolation from the other. The Christian who claims to believe but does not love the brothers has a faith that is not the faith of the New Testament. The Christian who claims to love the brothers without believing in Christ has a love that is not the love of the New Testament. Faith and love come together in Christ, given by the Spirit, and lived out in the ordinary fabric of Christian life.
The Mutual Abiding
John then gives the consequence. Whoever keeps His commandments abides in God, and God in him. The mutual abiding John has been building toward all through the letter is here named directly. The one who keeps Christ’s commandments abides in God. And God abides in him. The Christian is in God. God is in the Christian. This is not mystical speculation; it is the plain claim that the new life of the baptized is the life of God Himself at work in the Christian, and the Christian’s own life now located within the life of God. Faith and love are the visible shape of this mutual indwelling.
The Spirit as the Seal
And John gives the inner witness. By this we know that He abides in us, by the Spirit whom He has given us. The same Spirit we have met throughout the letter (the anointing of chapter two, the seed of God in chapter three) is the one whose presence confirms the reality of what John has been teaching. The Christian knows God abides in her because the Spirit has been given to her. This is not primarily a subjective feeling; it is the objective reality of the Spirit’s presence through Baptism and the Word, expressing itself in the faith and love John has been describing.
For the Lutheran Christian, the connection between Spirit, Baptism, Word, and the Christian life is seamless. The Spirit is given in Baptism through the Word. The Spirit produces faith through the continued ministry of Word and Sacrament. Faith produces love. Love is the visible evidence of what the Spirit has done. All of this is one work, proceeding from the Triune God, worked out in the ordinary life of the Christian in the Church. And John’s closing of this passage gathers all of it into a simple statement. We know He abides in us, by the Spirit whom He has given us. The Spirit’s presence is the ground of our knowing, and the ground of our confidence, and the ground of the faith and love that mark our lives as belonging to Him.
Gathering the Threads
John has given his readers, in this passage, the fullest development yet of the love-of-brother theme. The contrast between Cain who murdered and Christ who laid down His life. The startling equation of hatred with murder. The definition of love as the laying down of life for others, and the call to us to lay down our lives in the same way. The practical test of whether our hearts are open or closed to brothers in need. The pastoral comfort of God being greater than our hearts. The confidence before God and the prayer life that flows from keeping His commandments. And the single commandment that gathers all of this: believe in His Son and love one another.
For the Christian in any age, the passage is both searching and comforting. It is searching because the test is real. The Christian who has settled hatred of a brother, who closes her heart against the brother in need, whose love remains in word only and never reaches deed, has reason to examine what is actually at work in her. It is comforting because the Christian whose heart condemns her is reassured that God is greater than her heart, that His knowledge includes the whole reality of her life in Christ, that the Spirit’s presence in her is the objective ground of her standing even when her own sense of that standing is shaken.
For the Lutheran Christian, this passage connects love to faith in a way that Lutheran theology has always affirmed. Faith alone saves. But faith alone does not remain alone. Faith that is real produces love for the brothers, not as an addition to faith, but as its necessary expression. James and John stand together on this. John and Paul stand together on this. The whole New Testament stands on this. The one who claims to believe without love of brother has a claim that is contradicted by his life; the one who loves without believing has a love that is not the love Christ has shown. Faith and love come together, given by the one Spirit, sustaining the one Christian life, until the day we see Him face to face.
For Discussion
The following questions are for group discussion or personal reflection.
John uses Cain as the negative example. Have you experienced the Cain dynamic: someone resenting you for your faithfulness, or yourself being tempted to resent another for theirs? What happened, and how did it shape your understanding?
John equates hatred of brother with murder. That is strong language. Does this equation ring true in your experience? Where have you seen, or felt, the seed of the one in the other?
The laying down of our lives for the brothers includes all the small, ordinary surrenders that real love requires. Where in your life have you seen this kind of daily dying? Where are you currently being called to it?
John’s test about having the world’s goods and seeing a brother in need is concrete. What brother’s need are you currently aware of? What is keeping your heart open or closed to it?
God is greater than our hearts, and knows everything. When your heart condemns you, which it does, what does it mean practically for you to hear this word?
John gathers the Christian life into a single commandment: believe in Jesus Christ and love one another. Where are these two most integrated in your life? Where does one of them run ahead of the other?
Looking Ahead
Next week we move into chapter four, where John returns to a theme we first encountered in chapter two: the testing of spirits. False teachers continue to be a concern, and John gives his readers a specific theological test for distinguishing the Spirit of God from the spirit of antichrist. The test is Christological. Every spirit that confesses that Jesus Christ has come in the flesh is from God. Every spirit that does not confess Jesus is not from God. This will be the hinge on which the session turns, and it connects to the apologetic practice we saw in our study of 1 Peter.
Before next session, read 1 John 4:1–6 at least twice. The passage is brief but weighty. Notice the connection John makes between right belief about Christ and the Spirit of truth. This is territory where Lutheran theology of Christ and Spirit come together, and careful preparation will serve both you and your class.
Closing Prayer
Lord Jesus Christ, who laid down Your life for us while we were still Your enemies, teach us to love one another as You have loved us. Keep us from the Cain pattern, from the hatred that rises when our brother‘s righteousness exposes our own failure. Open our hearts toward the brothers and sisters in need, and make our love visible in deeds and in truth. When our hearts condemn us, remind us that You are greater than our hearts and know everything, including the grace by which You hold us still. Give us the Spirit’s assurance of Your abiding presence, that we may believe in Your name and love one another with the same steady love that brought You to the cross. Amen.