The Trinity Is Monotheism

The objection almost always assumes only two options: either God is a single solitary person, or Christians believe in three gods. The Trinity is neither. It confesses one God (one being, one divine nature, one will) who exists eternally as three persons (Father, Son, and Holy Spirit). The number “one” and the number “three” are not claimed in the same respect, so there is no contradiction. One cannot be three persons and also one person, but one can be one being in three persons.

State this plainly before arguing the texts. Much resistance to the doctrine is really resistance to a version no creed teaches: three rival gods, or one God wearing three masks. Both are heresies the church itself rejects.

Christian monotheism is not a softening of Israel’s confession; it is built on it. The Shema declares that the LORD our God, the LORD is one, and the biblical case for monotheism holds firm: there is no other God.

What is striking is how Paul handles that very confession. In 1 Corinthians 8:6, against a world of “many gods and many lords,” he writes of “one God, the Father” and “one Lord, Jesus Christ, through whom all things came.” Richard Bauckham observes that Paul has taken the Shema’s words, God and Lord, and arranged the one confession around both the Father and Jesus. This is not the addition of a second god alongside the first. It is the inclusion of Jesus within the identity of the one God of Israel.

The persons are not interchangeable labels; they relate to one another:

• The Father sends the Son, and the Son prays to the Father. John 17 shows the Son speaking of the glory he shared with the Father “before the world existed.”
• The Father and the Son send the Spirit, who teaches and reminds the disciples and is named as another Advocate.
• At Jesus’ baptism all three appear at once: the Son in the water, the Spirit descending, the Father’s voice from heaven.

Matthew 28:19 gathers them with deliberate care: disciples are baptized into “the name,” singular, “of the Father and of the Son and of the Holy Spirit.” One name, three persons. This single phrase rules out tritheism (it is one name) and modalism (the three are listed as distinct).

The doctrine would be unnecessary if only the Father were divine. But the New Testament assigns the marks of God to all three. The Son is Creator, Lord, and worshiped (see Jesus is God). The Spirit is treated as God: in Acts 5 lying to the Holy Spirit is lying to God, and the Spirit acts with personal will (see the personhood of the Holy Spirit).

Larry Hurtado shows that this was no late, philosophical overlay. The earliest Jewish believers were already worshiping Jesus alongside the Father within a firmly monotheistic frame. That devotional pattern is what the doctrine of the Trinity was later formulated to explain, not to invent.

The strongest objection is that the doctrine is simply incoherent or imported from paganism, that Christians “count to three and then say one,” and that this looks like the polytheism Scripture condemns. The charge is pressed hard in the Trinity is pagan and the Trinity violates monotheism.

Three replies:

• No contradiction. One being in three persons asserts oneness and threeness in different respects. That is hard to picture, but it is not the claim that one thing is three of the same thing.
• Not three gods. The persons share one undivided nature, will, and power; they are not three competing gods. Pagan pantheons are exactly what the doctrine denies.
• Driven by the data, not by philosophy. The church did not start from Greek metaphysics and deduce a triad. It started from the texts: one God, yet Father, Son, and Spirit each treated as that one God. Then it confessed the least distorting summary of all of them. The later vocabulary (being, person) serves the biblical data; it does not replace it.