Is God One or Many? What Protestant Christianity Teaches

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TL;DR: Protestant Christianity holds without reservation that God is one — a conviction rooted in the Hebrew Shema of Deuteronomy 6:4 Deuteronomy 6:4 and confirmed throughout the New Testament 1 Corinthians 8:6. There are no rival gods of equal standing. The Reformation tradition, following Luther and Calvin, grounded this monotheism entirely in Scripture (sola scriptura), not in church councils alone. Within that unity, most Protestant denominations affirm the doctrine of the Trinity — one God existing in three persons — though the precise formulation varies across Baptist, Methodist, and Reformed traditions Galatians 3:20.

The foundational text is the Shema, the confession that has anchored Jewish and Christian monotheism for millennia:

"Hear, O Israel: The LORD our God is one LORD." — Deuteronomy 6:4 Deuteronomy 6:4

Moses delivered these words to Israel on the plains of Moab, just before the people entered Canaan — a land saturated with polytheistic religion. The declaration wasn't abstract philosophy; it was a direct counter-claim against the gods of Egypt and Canaan. The Hebrew word translated "one" (echad) carries the sense of a unified singularity, and this passage became the core of Israelite worship Deuteronomy 6:4. Deuteronomy 4:39 reinforces the point with equal force: "Know therefore this day, and consider it in thine heart, that the LORD he is God in heaven above, and upon the earth beneath: there is none else" Deuteronomy 4:39. The phrase "none else" leaves no theological room for rival deities.

Paul carries this conviction directly into the New Testament. Writing to a Corinthian church surrounded by temples to Aphrodite and Apollo, he states: "to us there is but one God, the Father, of whom are all things, and we in him; and one Lord Jesus Christ, by whom are all things, and we by him" 1 Corinthians 8:6. Paul's framing is striking — he doesn't deny that other peoples worship other beings, but he denies those beings any ultimate reality or claim on Christian allegiance. One God. One Lord. The grammar is unambiguous.

Protestant · Christianity

Protestant view

"But to us there is but one God, the Father, of whom are all things, and we in him; and one Lord Jesus Christ, by whom are all things, and we by him." — 1 Corinthians 8:6 1 Corinthians 8:6

Protestant theology begins with Scripture, and Scripture speaks with one voice on this question: God is one. The Reformation-era consensus, articulated by John Calvin in his Institutes of the Christian Religion (1559), held that the unity of God is not a philosophical inference but a revealed fact — disclosed in the Law, the Prophets, and the Apostolic writings. Calvin drew directly on the Shema and on Paul's argument in 1 Corinthians 8 to establish that the God of Israel is the only God who exists in any ultimate sense 1 Corinthians 8:6. Martin Luther, preaching on the First Commandment, argued that to worship any other god was not merely wrong but incoherent — there simply is no other god to worship.

That said, Protestant monotheism is Trinitarian monotheism for the vast majority of denominations. The Westminster Confession of Faith (1646), which shaped Reformed and Presbyterian churches across the English-speaking world, states that there is "but one only living and true God" who subsists in three persons — Father, Son, and Holy Spirit. This isn't three gods; it's one divine being in three distinct modes of existence. The distinction matters enormously to Protestant theologians, who have historically rejected both modalism (the three persons are just masks worn by one person) and tritheism (three separate gods). Galatians 3:20 — "God is one" — was regularly cited in Reformation-era debates to close off any drift toward polytheism Galatians 3:20.

Denominational variance does exist, though it's narrower than outsiders often assume. Baptist confessions (the 1689 London Baptist Confession, for instance) affirm Trinitarian monotheism in language nearly identical to the Westminster Confession. Methodist theology, shaped by John Wesley in the 18th century, likewise holds to one God in three persons, though Wesley's Arminian soteriology differs sharply from Calvinist Reformed theology on other questions. Oneness Pentecostals — a minority stream — reject the traditional Trinity formulation and baptize only in Jesus' name, arguing that "Father, Son, and Holy Spirit" are titles for one person, not three. This position is considered heterodox by most Protestant bodies. The mainstream, across Baptist, Methodist, Anglican, Lutheran, and Reformed traditions, is clear: one God, three persons, no rivals.

Psalm 95:3 — "For the LORD is a great God, and a great King above all gods" Psalms 95:3 — raises an exegetical question that Protestant commentators have addressed directly: does "above all gods" imply other gods exist? The standard Protestant answer, from Calvin through 20th-century scholar G. K. Beale, is that the phrase uses the language of the ancient Near Eastern world to assert supremacy, not to concede the reality of competing deities. Similarly, Deuteronomy 10:17 calls God "God of gods, and Lord of lords" Deuteronomy 10:17 — a rhetorical superlative, not a pantheon. As of 2026, this remains the consensus interpretation across Protestant systematic theology.

Key takeaways

  • Protestant Christianity teaches that God is one — a conclusion drawn directly from Deuteronomy 6:4 ('The LORD our God is one LORD') and confirmed in 1 Corinthians 8:6.
  • Most Protestant denominations affirm the Trinity: one God in three persons. This is Trinitarian monotheism, not polytheism or tritheism.
  • Reformation scholars Calvin and Luther grounded divine unity in Scripture alone (sola scriptura), not in philosophical tradition or church councils.
  • Biblical phrases like 'God of gods' (Deuteronomy 10:17) and 'above all gods' (Psalm 95:3) are read by Protestant exegetes as rhetorical superlatives asserting supremacy, not as acknowledgments of rival deities.
  • Oneness Pentecostals represent a minority Protestant position that rejects the traditional Trinity formulation — considered heterodox by most Protestant bodies — while still affirming strict monotheism.

FAQs

Do Protestants believe in one God or three gods?
One God. Most Protestant denominations affirm the Trinity — Father, Son, and Holy Spirit — but insist this is one divine being in three persons, not three separate gods. The Westminster Confession (1646) and the Baptist confessions both use this formulation. Tritheism (three gods) has been consistently rejected as heresy across the Protestant tradition 1 Corinthians 8:6 Galatians 3:20.
What does Deuteronomy 6:4 mean for Protestant theology?
Deuteronomy 6:4 — "The LORD our God is one LORD" — is the bedrock monotheistic declaration that Protestant theology inherits from the Hebrew Bible Deuteronomy 6:4. Calvin treated it as the definitive scriptural proof that no other divine being exists with ultimate reality. Protestants read it as binding on Christians, not just Jews, because Jesus himself quoted it as the greatest commandment (Mark 12:29).
Does the Bible say there are other gods?
Some passages use the word "gods" (Psalm 95:3, Deuteronomy 10:17), but Protestant interpretation reads these as rhetorical superlatives — asserting God's supremacy in the language of the ancient world — not as admissions that rival deities actually exist Deuteronomy 10:17 Psalms 95:3. Deuteronomy 4:39 is explicit: "there is none else" Deuteronomy 4:39.
What do Oneness Pentecostals believe about God?
Oneness Pentecostals reject the traditional Trinitarian formula and hold that Father, Son, and Holy Spirit are titles for one person — Jesus. They baptize in Jesus' name only. Most mainline and evangelical Protestant bodies consider this position outside orthodox Christianity, though Oneness Pentecostals themselves affirm strict monotheism and cite 1 Corinthians 8:6 in their defense 1 Corinthians 8:6.
How did the Reformation change Christian teaching about God's oneness?
The Reformation didn't change the doctrine of divine unity — that was settled in the early church. What Luther and Calvin did was insist that the basis for the doctrine must be Scripture alone (sola scriptura), not church tradition or philosophical argument. Calvin's Institutes (1559) grounded monotheism in texts like Deuteronomy 6:4 Deuteronomy 6:4 and 1 Corinthians 8:6 1 Corinthians 8:6 rather than in Nicene council decisions, though the Nicene conclusion was affirmed.
Is the Trinity compatible with monotheism?
Protestant theology says yes — emphatically. The Trinity is one divine being (one substance, one essence) in three distinct persons. This is not three gods sharing power; it is one God whose inner life involves three persons in eternal relation. The distinction between "one in essence" and "three in person" is the load-bearing wall of orthodox Protestant theology on this question Galatians 3:20.
Do Baptists and Methodists agree on God's oneness?
On this specific question, yes. Both traditions affirm Trinitarian monotheism — one God in three persons. Their disagreements are primarily about salvation (Calvinist predestination vs. Arminian free will) and church governance, not about the unity or nature of God. The 1689 London Baptist Confession and Wesley's Articles of Religion both confess one God Deuteronomy 6:4 1 Corinthians 8:6.

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