---
title: "Didn’t the church always believe in the Trinity?"
description: "The objection “The church has always believed in the Trinity, and Oneness is an old heresy the early church rejected.”, stated at full strength and answered from Scripture."
url: "https://onegodapologetics.com/academy/lab/the-church-always-believed-it/"
source: "One God Apologetics"
section: "The Objection Lab"
tags: ["godhead"]
license: "Free to read and quote with attribution."
---

# Didn’t the church always believe in the Trinity?

> The objection, in the words its strongest advocate would use: “The church has always believed in the Trinity, and Oneness is an old heresy the early church rejected.”

*An objection answered at https://onegodapologetics.com/academy/lab/the-church-always-believed-it/*

## The objection at full strength

The councils did not invent the Trinity; they defended what the church already confessed. Jesus commanded baptism “in the name of the Father, and of the Son, and of the Holy Ghost” (Matt 28:19), and Paul blessed the church with the grace of the Lord Jesus, the love of God and the communion of the Holy Ghost (2 Cor 13:14). The early church manual known as the Didache gives the same baptismal formula.[^1] Justin Martyr describes baptism in the name of the Father, of Jesus Christ and of the Holy Spirit.[^2] Theophilus of Antioch speaks of a divine triad around AD 180.[^3]

Doctrine develops, but development is not invention. When Noetus, Praxeas and Sabellius taught that the Father and the Son are one person, the church’s teachers answered them in writing, and Noetus and Sabellius were put out of fellowship.[^4][^5] Nicaea and Constantinople gave precise words to a faith held from the beginning.

## The ninety-second answer

The classic definition came in the fourth century, at Nicaea (325) and Constantinople (381). Before that the record is mixed. Noetus of Smyrna (c. 200), and Praxeas and Sabellius at Rome, taught that the Father Himself was revealed in Christ.[^5] Tertullian (c. 213) admitted that “the simple,” “always the majority of believers,” were startled at the “economy” he defended.[^6] The earliest surviving Latin use of *trinitas* is his. Scripture, not a later consensus, is the standard.

## The five-minute answer

**1. Start with what both sides accept.** The doctrine of the Trinity received its classic definition in the fourth century. The Council of Nicaea (AD 325) confessed the Son to be “of one substance” (ὁμοούσιος (*homoousios*)) with the Father; its creed said of the Spirit only “and in the Holy Spirit.”[^7] The fuller article on the Spirit, as Lord and giver of life, worshiped and glorified with the Father and the Son, is associated with the Council of Constantinople (AD 381).[^8] No apostle and no New Testament writer uses the language of one essence in three persons. Your opponent may grant all this and say the councils only defined what was always believed. So the real question is what Christians believed before 325.

**2. The earlier record is not uniform.**

- **Noetus of Smyrna** (c. AD 200). His opponent Hippolytus reports that Noetus taught that Christ was the Father Himself, and that the Father was born, suffered and died. Examined by the presbyters, Noetus answered that he glorified one God.[^4]
- **Praxeas**, who brought his teaching to Rome and was answered by Tertullian in *Against Praxeas* (c. AD 213). Tertullian admits that “the simple,” who are “always the majority of believers,” were startled at the “economy” he defended, because their rule of faith had brought them from many gods to the one true God. They held to the “monarchy,” God’s sole rule, and accused Tertullian’s side of preaching two or three gods.[^6]
- **Sabellius**, teaching in Rome (c. AD 215–220) and later excommunicated by Callistus.[^5]
- **Zephyrinus and Callistus**, bishops of Rome. Hippolytus, a hostile witness, reports in *Refutation of All Heresies* IX that Zephyrinus declared he knew one God, Christ Jesus, and no other who was born and suffered (though he also has him say that the Son, not the Father, died). He adds that Callistus taught that Father and Son are one indivisible Spirit, and called Hippolytus’s party worshipers of two gods.[^5]

Those who defended the distinctions before Nicaea were not Nicene either. The earliest surviving Latin use of *trinitas* is in Tertullian,[^6] yet Tertullian could write that there was a time when the Son did not exist.[^9] Hippolytus granted that the Word before the incarnation was not yet “perfect Son.”[^4] Standard histories by Trinitarian scholars describe the second and third centuries as a time when this vocabulary was still being worked out.[^10]

**3. What this does and does not prove.** It does not prove that every monarchian taught exactly what Oneness believers teach, and a careful debater will not claim it. Most of what we know about them comes from their opponents. It proves something narrower, and it is enough: the church before Nicaea was not uniformly Trinitarian; confessing one God fully revealed in Jesus Christ was common enough that Tertullian admitted most ordinary believers were uneasy with his alternative; and the vocabulary of one essence in three persons took centuries to settle.

**4. The triadic texts.** The Didache and Justin repeat the wording of Matthew 28:19. They name Father, Son and Spirit, but they do not define three persons.[^1][^2] Theophilus’s triad is God, His Word and His Wisdom, not the later formula.[^3]

**5. The standard is Scripture.** A doctrine is not apostolic because it became the majority view in the fourth century. The Bereans were commended for checking even an apostle against the Scriptures (Acts 17:11). And Scripture’s confession is plain:

> Hear, O Israel: The LORD our God is one LORD:
>
> — Deuteronomy 6:4 (KJV)

> And without controversy great is the mystery of godliness: God was manifest in the flesh, justified in the Spirit, seen of angels, preached unto the Gentiles, believed on in the world, received up into glory.
>
> — 1 Timothy 3:16 (KJV)

## The trap to avoid

Don’t say the early church was Oneness, or that Noetus, Praxeas and Sabellius believed exactly what you believe. Most of what we know about them comes from hostile sources, and a historian in the room will pull that claim apart. Don’t say the Trinity was “invented at Nicaea” either. Nicaea dealt with the Son’s deity, and the fuller doctrine of the Spirit came later.[^7]

Make the narrower claim, with names and dates: the record before Nicaea was not uniform, the vocabulary developed over centuries, and Tertullian himself admitted that most ordinary believers were uneasy with it. Then return to Scripture as the standard.

## A model answer

Let’s be precise about the history. The classic definition of the Trinity came at the Council of Nicaea in 325 and the Council of Constantinople in 381. No apostle ever said “one essence in three persons.” So the question is what Christians believed before that.

Around AD 200, Noetus of Smyrna taught that Christ was the Father Himself.[^4] Praxeas taught the same in Rome. Between about 215 and 220, Sabellius was teaching in Rome, and according to Hippolytus, who opposed all of them, one bishop of Rome publicly said he knew one God, Christ Jesus, and the next bishop called Hippolytus’s party worshipers of two gods.[^5]

Here’s the witness I find most striking. Tertullian, the first writer we know of to use the Latin word *trinitas*, wrote around 213 that “the simple,” who are “always the majority of believers,” were startled by the “economy” he taught. Why? Because their faith had brought them from many gods to the one true God.[^6]

I’m not claiming every one of those men believed exactly what I believe. I’m claiming the early church was not uniformly Trinitarian, and that the language of three persons took centuries to settle. So we come back to Scripture: “Hear, O Israel: The LORD our God is one LORD,” and “God was manifest in the flesh.” That’s the faith I’m defending.

## The verses

- Deuteronomy 6:4
- John 1:14
- 1 Timothy 3:16
- Acts 2:33
- Jude 4
- Acts 17:11

## Notes

[^1]: The Didache. Late first or early second century; 7.1, the baptismal formula.
[^2]: Justin Martyr, First Apology. c. AD 150–155; ch. 61, the baptismal formula.
[^3]: Theophilus of Antioch, To Autolycus. c. AD 180; 2.15, the earliest surviving Christian use of the Greek trias (God, His Word and His Wisdom).
[^4]: Hippolytus, Against Noetus. Early third century; ch. 1 (Noetus’s teaching and his examination by the presbyters), ch. 15 (the Word not yet “perfect Son” before the incarnation). English in Ante-Nicene Fathers, vol. 5.
[^5]: Hippolytus, Refutation of All Heresies, book IX. Written after c. AD 222; Noetus’s followers at Rome, Zephyrinus, Callistus and Sabellius (chapter numbers differ between editions). English in Ante-Nicene Fathers, vol. 5.
[^6]: Tertullian, Against Praxeas. c. AD 213; ch. 1 (Praxeas at Rome), ch. 2–3 (trinitas, the “economy”, “the simple”, the “monarchy”). English in Ante-Nicene Fathers, vol. 3, and E. Evans, Tertullian’s Treatise Against Praxeas (1948).
[^7]: Creed of the Council of Nicaea. AD 325; the creed and its closing anathema. Text in N. P. Tanner, ed., Decrees of the Ecumenical Councils, vol. 1 (1990).
[^8]: Council of Constantinople and the Nicene–Constantinopolitan Creed. AD 381; the creed associated with the council, first attested in the acts of Chalcedon (451). Text in Tanner, vol. 1.
[^9]: Tertullian, Against Hermogenes. Early third century; ch. 3, on God becoming Father and Judge, and a time when there was no Son. English in Ante-Nicene Fathers, vol. 3.
[^10]: J. N. D. Kelly, Early Christian Doctrines. 5th ed. (London: A. & C. Black, 1977); the chapters on the second- and third-century doctrine of God and on monarchianism.

## Read the case in full

- [Oneness Theology: A Working Compendium](https://onegodapologetics.com/library/oneness-theology-a-working-compendium/) — A short but complete map of Oneness theology: the one God of Israel, manifested in flesh as Jesus Christ. It works through the Hebrew and Greek of the key Old and New Testament texts, the typology of the angel, the tabernacle and the priesthood, and the apostolic practice of baptism in Jesus’ name. Each contested text is set beside the strongest Trinitarian reading before it is answered.
- [Ten Objections to Oneness, Answered](https://onegodapologetics.com/library/ten-objections-to-oneness-answered/) — The ten objections Oneness believers hear most often, each stated first in its strongest Trinitarian form and then answered from Scripture. The final section tests the claim that the church always confessed three persons, with names and dates from Noetus and Praxeas to the councils of 325 and 381.