Article • The False Oneness Doctrine
Oneness Doctrine — The Verdict of Scripture: A False Gospel
Monotheism, yes — one solitary Person, no. The whole-Bible verdict on the Oneness claim.
Psalm 110:1 (KJV)
Do the Old Testament’s “one God” verses disprove the Trinity? No. The Oneness error is not believing God is one — Trinitarians believe that too — but defining that oneness as singularity of person rather than unity of being. The Old Testament never says God is one person. It says God is one, and the same Scriptures reveal that one God speaking as “Us,” sending the Messiah, and pouring out His Spirit.
“The LORD said unto my Lord, Sit thou at my right hand, until I make thine enemies thy footstool.”— Psalm 110:1
The Real Oneness Error
The Oneness doctrine claims that any Old Testament Scripture declaring God is one, or that there is no God besides Him, automatically proves their view and refutes the New Testament teaching of the Trinity. It sounds strong at first, but it collapses the moment you actually study the text. The Old Testament does indeed teach that there is one God, and Christians who believe in the Trinity affirm that truth without reservation. However, the Oneness error is not in believing God is one; the error is in defining that oneness as singularity of person rather than unity of being. The Old Testament never says God is one person. It says God is one. And the same Old Testament that thunders monotheism also contains a complex, multi-personal revelation of that one God that prepares us for the fuller New Testament disclosure of the Father, the Son, and the Holy Spirit.
“Let Us Make Man” — Plural Language in Genesis
Consider the creation account in Genesis 1:26, where God declares, “Let us make man in our image, after our likeness.” The Hebrew text uses the plural noun Elohim for God, and the verb structure shifts to the plural: “Let Us,” “Our image,” “Our likeness.” If God were strictly a single person, speaking to Himself alone, the text would simply say, “Let Me make man in My image.” But it does not. The plural language is deliberate, and it appears again in Genesis 3:22, where the Lord says, “the man is become as one of us,” and in Genesis 11:7, where He says, “Go to, let us go down, and there confound their language.” These are not angels surrounding God’s throne, as some suggest, because nowhere does the text introduce angels into these specific declarations. The speaker is God, and the addressee is also God. The same pattern appears in Isaiah 6:8, where the Lord asks, “Whom shall I send, and who will go for us?” The singular “I” sends, but the plural “Us” commissions. This is not grammatical confusion; it is the biblical witness to a God who is one in essence yet exists in a plurality of persons.
God Speaking to God in the Psalms and Prophets
The Psalms and Prophets continue this revelation. Psalm 110:1 records a conversation within the Godhead: “The LORD said unto my Lord, ‘Sit thou at my right hand, until I make thine enemies thy footstool.’” David, under the inspiration of the Spirit, recognizes two distinct Lords: Yahweh (the LORD) and Adonai (my Lord). One speaks to the other. One invites the other to sit at His right hand. A person cannot sit at his own right hand. This is not a man speaking to God; it is God speaking to God, and Jesus Himself confirms this when He asks the Pharisees how the Christ can be David’s son if David calls Him “Lord” (Matthew 22:41–45). Isaiah 48:16 adds another layer: “And now the Lord GOD, and his Spirit, hath sent me.” Here we find three distinct actors in one verse: the Lord GOD, the One who is sent, and the Spirit of the Lord. Zechariah 2:10–11 distinguishes the LORD who sends from the LORD who comes to dwell in the midst of His people. Malachi 3:1 speaks of the messenger preparing the way for the Lord, “and the Lord, whom ye seek, shall suddenly come to his temple.” The messenger does not prepare the way for a mere human; he prepares the way for the Lord Himself, yet this coming Lord is distinct from the LORD who sends Him. These passages do not teach three gods; they teach that the one God exists in a way that allows for internal distinction, sending, and fellowship.
The Shema and the Meaning of “Echad”
The Oneness doctrine leans heavily on Deuteronomy 6:4, the great Shema: “Hear, O Israel: The LORD our God is one LORD.” They insist this verse proves God is one person, but the text says no such thing. The Hebrew word for “one” is echad, and it consistently describes a composite unity, not an absolute singularity. In Genesis 2:24, a husband and wife become “one flesh”—echad. They remain two distinct persons, but in marriage they form one unit. In Exodus 26:6, fifty clasps join the tabernacle curtains so that it becomes echad—one tabernacle, yet made of many parts. In Ezekiel 37:17, two sticks become echad in the prophet’s hand. If Moses had intended to teach absolute numerical singularity of person, he could have used the Hebrew word yachid, which means only, solitary, or unique. But he used echad, the word for unified oneness. Deuteronomy 6:4 affirms that Israel’s God is uniquely one, indivisible in His divine essence, and incomparable to the false gods of the nations. It does not, however, exclude the possibility that this one God exists as Father, Son, and Holy Spirit. It simply declares monotheism, and Trinitarians are monotheists.
The New Testament Fulfills, Not Contradicts
When the New Testament arrives, it does not contradict the Old Testament; it fulfills and illuminates it. Matthew 28:19 commands the church to baptize disciples “in the name of the Father, and of the Son, and of the Holy Ghost.” The singular “name” (onoma) is used for three distinct persons, indicating that they share one divine identity, one authority, and one essence. This is not three gods; it is the one true God revealed in three persons. Second Corinthians 13:14 pronounces the apostolic blessing: “The grace of the Lord Jesus Christ, and the love of God, and the communion of the Holy Ghost, be with you all.” Paul does not pray to three separate deities. He invokes the one God in His threefold personal existence. The Father is the source of love, the Son is the channel of grace, and the Spirit is the bond of fellowship. These are not three modes of one person switching roles, as Modalism claims. They are three eternal persons, one divine nature, perfectly united in the mystery of the one true God.
The Verdict of Scripture
Therefore, the Oneness argument from Old Testament monotheism fails at every level. The texts they cite prove God is one, but they do not prove God is one person. Meanwhile, the Old Testament itself contains a rich, multi-personal revelation of God that the New Testament brings to full light. The Trinity is not a later invention of philosophers. It grows straight out of the Bible, from Genesis to Revelation.
Common Questions
Does the Old Testament ever say God is one person?
No. It says God is one (Deuteronomy 6:4), which affirms monotheism. The error is redefining that as one person. Scripture describes the one God with plural language (“Let us make man,” Genesis 1:26) and internal dialogue (Psalm 110:1) that a single solitary person could not have.
What does “Let us make man” (Genesis 1:26) mean?
The plural “us” and “our” are deliberate, repeated in Genesis 3:22, 11:7 and Isaiah 6:8. These are not angels — the text names God as the speaker and God as the addressed. It reveals one God existing in a plurality of persons.
Doesn’t the Shema (“the LORD is one”) prove God is one person?
No. The Hebrew word is echad, a composite unity — husband and wife become “one flesh” (Genesis 2:24), and two sticks become one in the prophet’s hand (Ezekiel 37:17). Had Moses meant a solitary one, he would have used yachid. The Shema declares monotheism, which Trinitarians affirm.
Is the Trinity a later invention rather than biblical?
No. Psalm 110:1 records the LORD speaking to David’s Lord; Isaiah 48:16 names the Lord GOD, the Sent One, and the Spirit; and the New Testament baptizes in the one “name” of Father, Son, and Holy Ghost (Matthew 28:19). The Trinity grows straight out of the Bible.