θεός

John 1:1 introduces the question at the center of this word study:

“In the beginning was the Word, and the Word was with God, and the Word was fully God.” (John 1:1, NET)

The Greek is En archē ēn ho logos, kai ho logos ēn pros ton theon, kai theos ēn ho logos. The NET’s final clause makes the divine nature of the Word explicit. The Word is distinguished from the one He is with, yet shares the divine nature.

The dispute concerns the last clause, theos ēn ho logos. The Jehovah’s Witness interpretation treats the Word as a lesser divine being. The NET affirms His full deity. The grammatical discussion below explains why the absence of the article before theos does not make the Word one god among others.

Most of the time, disagreement among English translations is a disagreement about emphasis or tone. Here, the disagreement is about the deity of Christ. Theos, the most foundational word in the New Testament’s vocabulary of God, sits at the center of the Christian confession — and at the center of the heresies the church has been required to refute. Volume One of this project opened with logos, the Word made flesh. Volume Two opens with theos, the God whose Word the Word is.

This chapter is about that word.

The Word

The Greek word is θεός (theos), pronounced in the academic Erasmian convention of this book as theh-OSS, with the accent on the second syllable. The diphthong eos is two distinct vowels: theh-OSS, not theez.

The word family is enormous. The most important relatives:

Theotēs (θεότης) — deity, the abstract quality of being God. Used at Colossians 2:9 (“in him all the fullness of deity lives in bodily form”). This word will receive its own chapter (Chapter 5).

Theiotēs (θειότης) — divinity, divine nature. Used at Romans 1:20 (“his eternal power and divine nature”). Often treated as a near-synonym of theotēs, though confessional theologians have at times distinguished them carefully.

Theios (θεῖος) — divine, the adjectival form. Used at 2 Peter 1:3-4 (“his divine power… partakers of the divine nature”) and at Acts 17:29 in Paul’s Areopagus speech.

Theopneustos (θεόπνευστος) — God-breathed, inspired. The famous word from 2 Timothy 3:16 (“Every scripture is inspired by God”), built from theos + the pneō root (to breathe). A hapax legomenon (a word occurring only once) in the New Testament, but theologically foundational.

Atheos (ἄθεος) — without God, godless. Used at Ephesians 2:12, where Paul describes the Gentiles before Christ as “having no hope and without God in the world.” The English word atheist derives from this Greek root, though the New Testament sense is closer to estranged from God than to denying God’s existence.

The etymology runs back through Indo-European roots, where the reconstructed ancestor of theos is related distantly to Latin deus (god), Latin dies (day), and Sanskrit dyaus (sky-god, the source of the Greek divine name Zeus). The etymological background is interesting but does not determine the New Testament meaning. By the time of the New Testament, theos was simply the standard Greek word for God or a god — used by pagans for their deities and by Greek-speaking Jews and Christians for the God of Abraham.

The Septuagint background is critical for understanding the New Testament’s use of theos. When Greek-speaking Jews translated the Hebrew Old Testament into Greek (the project we know as the LXX), they faced a choice about how to render the Hebrew words for God. Hebrew uses two main terms: Elohim (the generic word for God or gods) and the personal divine name YHWH (the Tetragrammaton, usually transliterated Yahweh, sometimes rendered Jehovah in older English Bibles). The LXX translators settled on a convention: theos would render Elohim, and kyrios (lord, master) would render YHWH.

This convention shapes the entire New Testament. When a New Testament writer says theos, he is using the Greek equivalent of Elohim. When he says kyrios, he is using the Greek equivalent of YHWH. The two words name the same God — but with different shades of emphasis. Theos names God in His divine being; kyrios names God by His personal name. The chapter on kyrios in Volume One treated this distinction at length.

The implication for theos in the New Testament is this: when the New Testament uses theos, it is drawing on the LXX’s vocabulary for the God of Israel — the Elohim of the Old Testament Scriptures. It is not introducing a new God. It is naming the same God, in the same vocabulary, with the added testimony that this God has now spoken finally in His Son.

Range of Meaning

Theos in the New Testament covers a meaningful range:

The one true God. The dominant New Testament usage. Theos names the God of Israel, the Father of Jesus Christ, the Creator and Redeemer. Hundreds of occurrences. This is the meaning a reader of the New Testament should assume by default.

A pagan god. Used negatively or polemically. Acts 14:11 — the people of Lystra cry out that “So when the crowds saw what Paul had done, they shouted in the Lycaonian language, ‘The gods have come down to us in human form!’” 1 Corinthians 8:5 — “If after all there are so-called gods, whether in heaven or on earth (as there are many gods and many lords),” The New Testament uses the word for false gods only to expose their falsity, never to legitimate them.

Divine beings or angels. Rare and contested. Some passages in the LXX use theoi (plural) for what the Hebrew calls elohim — beings in the divine council, possibly angels. The New Testament does not develop this usage in any substantial way.

Christ. This is the theologically loaded usage that drives much of this chapter. Theos is applied directly to Jesus Christ in several New Testament passages — John 1:1, John 1:18, John 20:28, Romans 9:5, Titus 2:13, 2 Peter 1:1, Hebrews 1:8. Seven direct attributions in passages that are not theologically disputable in their meaning, even if some are disputable in their punctuation. The pattern is too consistent to dismiss.

The Holy Spirit. By implication. Acts 5:3-4 — Peter says to Ananias, “You have not lied to people but to God!” after first identifying the lie as “But Peter said, ‘Ananias, why has Satan filled your heart to lie to the Holy Spirit and keep back for yourself part of the proceeds from the sale of the land?’” The two statements equate. The Spirit is theos.

The belly. Philippians 3:19 — Paul’s ironic description of the enemies of the cross: “Their end is destruction, their god is the belly, they exult in their shame, and they think about earthly things.” Clearly satirical; the New Testament will sometimes use the word ironically to expose disordered worship.

The “among whom the god of this age has blinded the minds of those who do not believe so they would not see the light of the glorious gospel of Christ, who is the image of God.” 2 Corinthians 4:4 — Paul’s description of Satan, “among whom the god of this age has blinded the minds of those who do not believe so they would not see the light of the glorious gospel of Christ, who is the image of God.” who blinds the minds of unbelievers. Used by analogy, not by ontology. Satan exercises rule over the unregenerate world, but he is not theos in the same sense the Father is.

The dominant usage — by far — is the first one. When the New Testament says theos without qualification, it means the one true God of Israel, the Father of Jesus Christ.

Where You’ll Meet It

John 1:1. “In the beginning was the Word, and the Word was with God, and the Word was fully God.” The foundational New Testament text for understanding theos in its relation to the Word. The Greek deserves close attention: en archē ēn ho logos, kai ho logos ēn pros ton theon, kai theos ēn ho logos.

The three-clause structure is precise. First clause: en archē ēn ho logos — “in the beginning was the Word.” Second clause: kai ho logos ēn pros ton theon — “and the Word was with the God” (note the article — ton theon, “the God,” referring to the Father specifically). Third clause: kai theos ēn ho logos — “the Word was fully God” (no article — theos, predicate nominative). The grammar carries the doctrine. The Word is distinguished from the Father (Clause 2: the Word was with the Father). The Word is identified as God (Clause 3: the Word was God). Trinitarian doctrine is not imposed on the verse by later church councils; it is right there in the Greek grammar.

John 20:28. “Thomas replied to him, ‘My Lord and my God!’” In Greek: Ho kyrios mou kai ho theos mou. This is the first New Testament instance of a believer addressing Jesus directly as theos. Notice the construction: both nouns carry the article and the personal pronoun. Thomas is not making an abstract theological statement; he is making a personal confession. My Lord and my God. Jesus accepts the address without correction — and the contrast with Revelation 22:9, where the angel refuses worship, is important. Jesus accepts what an angel must refuse. The text is one of the strongest in the New Testament for the deity of Christ.

Romans 9:5. “To them belong the patriarchs, and from them, by human descent, came the Christ, who is God over all, blessed forever! Amen.” The verse is famously disputed at the level of punctuation: should “who is God over all” refer back to Christ, or should it begin a new doxology to the Father (“To them belong the patriarchs, and from them, by human descent, came the Christ, who is God over all, blessed forever!”)? The Greek favors the first reading on grammatical and stylistic grounds — Paul’s word order, the natural flow of the participial phrase, and the comparative weight of doxologies elsewhere in the Pauline corpus. Most modern translations agree. Paul calls Christ theos.

1 Corinthians 8:6. “yet for us there is one God, the Father, from whom are all things and for whom we live, and one Lord, Jesus Christ, through whom are all things and through whom we live.” This is Paul’s Christianized version of the Shema (Deuteronomy 6:4 — “Hear, O Israel: The Lord is our God, the Lord is one!”). Paul takes the Hebrew Shema’s two key terms — Yahweh (= kyrios in LXX) and Elohim (= theos) — and distributes them across Father and Son: theos belongs to the Father, kyrios to the Son. But the monotheistic confession of the Shema remains intact: one God, one Lord, and the God and the Lord are the same God. Paul is doing in two verses what the church would take centuries to articulate in creeds.

Hebrews 1:8. “but of the Son he says, ‘Your throne, O God, is forever and ever, and a righteous scepter is the scepter of your kingdom.’” The author of Hebrews quotes Psalm 45:6 (LXX 44:7) and identifies the addressee as the Son. In other words: the Father addresses the Son as theos. The Old Testament’s Elohim of the Psalm becomes, in the New Testament’s reading, an address from the First Person of the Trinity to the Second. The text would not work this way if the Son were not fully theos. The verse is one of the cornerstones of the New Testament’s case for the deity of Christ.

What Confessional Lutherans Hear

Three emphases bear repeating, because the New Testament’s use of theos puts each one beyond dispute.

One God. The Christian confession is monotheistic. There is one God, not many. Augsburg Confession Article I opens with this: “We unanimously hold and teach, in accordance with the decree of the Council of Nicaea, that there is one divine essence, which is called and which is truly God.” Confessional Lutherans share this confession with the historic church catholic, against ancient polytheism and modern syncretism alike. The New Testament’s theos — when it refers to the true God — is always this one God.

Three persons of the one God. The same New Testament that confesses one theos applies the name to Father, Son, and Holy Spirit. The Trinity is not a later doctrinal accretion imposed on the biblical text; it is the necessary reading of the New Testament’s actual grammar. The Father is theos (every page of the New Testament). The Son is theos (John 1:1, John 20:28, Romans 9:5, Titus 2:13, 2 Peter 1:1, Hebrews 1:8). The Spirit is theos (Acts 5:3-4 by direct implication). One theos, three persons. Augsburg Confession Article I continues: “yet there are three persons, of the same essence and power, who also are coeternal, the Father, the Son, and the Holy Spirit.”

The God of Abraham, Isaac, and Jacob is the Father of Jesus Christ. The same God who spoke to the patriarchs and gave the Law at Sinai is the God who has now spoken in His Son (Hebrews 1:1-2). This is the necessary implication of the New Testament’s vocabulary: when New Testament writers say theos, they are using the LXX’s word for the Elohim of the Old Testament. There is not a new God in the New Testament; there is the same God, more fully revealed. Marcionism — the second-century heresy that pitted the God of the Old Testament against the God of the New — has died many deaths over the centuries but remains tempting in some popular American Christianity. The lexicon refutes it: theos in the New Testament is Elohim in the Old.

The pastoral payoff is straightforward. When you confess “I believe in God,” the Christian content of that confession is the Trinity. Not a generic monotheism. Not a vague spiritual presence. Not a personal philosophy. The Christian’s God is the God who has acted in the history of Israel, who has spoken in Jesus Christ, who continues to act through His Spirit. When the apostles write theos, they mean this God and no other. When confessional Lutherans confess theos, we mean the same.

Where People Get It Wrong

The misreadings of theos are some of the oldest in the history of the church. Each has a modern form.

The Jehovah’s Witness reading of John 1:1. The New World Translation, the Bible produced by the Watch Tower Bible and Tract Society, renders John 1:1c as “In the beginning was the Word, and the Word was with God, and the Word was fully God.” The argument hangs on the absence of the article (theos in this clause, without the article ho). The Watch Tower has trained its publishers to point to this absence as evidence that the Word is not the God but only a god — a created being, a lesser divine entity, but not Yahweh.

The argument is grammatically untenable. In Greek, predicate nominatives preceding the verb routinely lack the article without becoming indefinite. This is a well-established feature of Greek syntax, sometimes called Colwell’s Rule.¹ The same construction appears at John 4:24 (“God is spirit” — pneuma ho theos, anarthrous predicate nominative), at John 1:14 (“the Word became flesh” — anarthrous sarx), and dozens of other places where no one would suggest the predicate noun is indefinite. The grammar requires the third clause of John 1:1 to read either “In the beginning was the Word, and the Word was with God, and the Word was fully God.” or “In the beginning was the Word, and the Word was with God, and the Word was fully God.” (qualitative emphasis). It cannot grammatically read “In the beginning was the Word, and the Word was with God, and the Word was fully God.”

Arianism, ancient and modern. The fourth-century heresy that taught the Son was a created being — the first and highest of God’s creatures, but a creature nonetheless. The Council of Nicaea (AD 325) condemned this view, asserting that the Son is homoousios (of the same substance) with the Father. Modern Arianism survives in various forms — Jehovah’s Witnesses, some Unitarian-Universalist traditions, occasional academic theologians. All of them must explain away the New Testament’s direct application of theos to the Son. None of them does so without strain.

Modalism, ancient and modern. The opposite error: not denying the deity of the Son but denying the distinction of persons. On a modalist reading, “Father, Son, and Spirit” are three masks or modes the one God wears at different times. The same God plays different roles in the divine drama. The historic church condemned this view in the third century (against Sabellius); the Athanasian Creed names the error explicitly. Modalism appears today in Oneness Pentecostalism and in some popular preaching that conflates the persons of the Trinity. The New Testament’s use of theos will not bear it: in John 1:1 the Word is with the Father (clear distinction of persons) and is God (clear unity of essence). One or the other modalism denies; both the New Testament confesses.

Henotheism. The belief that there is one supreme God among many lesser gods. Common in ancient Near Eastern religion; surviving in popular American spirituality more often than people realize. Mormon theology teaches a form of it; so does the “God among gods” theology of various New Age writers. The New Testament’s theos — heir of the Hebrew Shema’s Yahweh is one — admits no rival. For us there is one God (1 Corinthians 8:6), and the so-called gods of the nations are not gods at all (1 Corinthians 8:4-6).

Generic theism. The vague belief in “God” that names no particular God. The most common American religious posture. When a person says “I believe in God” without specifying which God or what kind of God, the confession is not yet Christian. The New Testament does not allow this generic confession; it always specifies. Theos in the New Testament is the God who raised Jesus from the dead (Romans 10:9), the God and Father of our Lord Jesus Christ (2 Corinthians 1:3), the only true God and Jesus Christ whom he has sent (John 17:3). To confess theos in the New Testament sense is to confess the Trinity.

The “God of the philosophers” temptation. Drawing the Christian doctrine of God primarily from philosophical reasoning (the unmoved mover, the necessary being, the cosmic intelligence) rather than from the biblical narrative. The danger is real even within Christian theology: a God reasoned to without the gospel will not save anyone, because the God who saves is known only through Christ. Confessional Lutherans have historically been wary of natural theology that proceeds far without the revealed Word. Luther’s theologia crucis makes the point with characteristic sharpness: God is known truly only in the cross of Christ, not in the abstractions of unaided reason. The theos of the New Testament is not the philosopher’s God; He is the God of the cross.

So What

The Sunday school teacher angle is direct: when you teach about God in your adult class, what God are you teaching about? American religious culture defaults toward a “generic theism” — God as a vague benevolent presence, a higher power — and even regular churchgoers carry that default into their hearing of Scripture. When you read “God loved the world” (John 3:16, NET), the word “God” in your students’ ears may default to that generic deity, not to the Father of Jesus Christ who spoke through the prophets and acted in history.

The teaching application is straightforward. When you meet the word “God” in a text, ask: which person of the Trinity does this passage name, and what is His relationship to the others? The Greek often helps — theos with the article (ho theos) frequently names the Father specifically, while anarthrous theos often carries qualitative emphasis (“divine in nature”). And the Old Testament background is essential: theos translates Elohim, and the God of Israel is the same God now revealed as the Father of Jesus Christ.

For Bible study leaders, the application extends to the doctrine of God. The first article of the Apostles’ Creed — “I believe in God, the Father almighty” — is not a generic statement about a higher power but a specific confession of the Trinity’s first person, in the company of the Son and the Spirit. The Creed is structurally Trinitarian even where the word Trinity never appears.

In daily life, the implication is pastoral. When a neighbor says “I believe in God,” the Christian’s response is not to dismiss it but to ask what is meant. The deity the New Testament confesses has a name and a face: the Father of our Lord Jesus Christ, who has acted in history and spoken in His Son. He is not far from any of us (Acts 17:27) — but neither is He vague. The witness is to name Him rightly, and to invite the neighbor to know Him truly.

Volume One opened with logos, the Word; this volume opens with theos, the God whose Word it is. These two are not in competition but in communion: the Word is God (John 1:1), and the God speaks His Word (Hebrews 1:1-2). Volume One listened to what the Word says; Volume Two considers who the God is who speaks — and who, in His Word made flesh, has spoken Himself to us.