The Objection: The Mathematical Challenge
Critics of Christian theology—particularly Islamic apologists—frequently challenge the doctrine of the Triune Godhead by arguing that the concept of Three Persons existing as One God is illogical, mathematically unsound, and absurd. They argue that 1 + 1 + 1 must always equal 3, insisting that Christians worship three separate gods.
However, Scripture repeatedly uses the word “ONE” (Echad in Hebrew, Eis/Hen in Greek) to describe a composite unity—where multiple distinct individuals or items are unified in purpose, nature, desire, or relationship, and are designated by the divine count of One (1).
Scriptural Analysis: Multiplicity Counted as “One”
Below are key biblical passages demonstrating that the number “One” often reflects qualitative and relational unity rather than mere numerical headcount:
Genesis 2:24: “...and they shall become one flesh.”
Question: Does “one flesh” mean the physical bodies of the husband and wife merge into a single organism? No. The count of “one” operates on relational, mental, emotional, and covenantal levels.
Genesis 11:6: “Indeed the people are one and they all have one language...”
Question: How can tens of thousands of individual human beings at the Tower of Babel be called “one”? Because their unity was defined by shared ambition, purpose, consent, and collective action.
Ezekiel 37:16–19: “...and join them one to another into one stick, and they shall become one in your hand.”
Question: How do two separate wooden sticks representing two divided nations (Judah and Ephraim/Israel) become “one stick”? God designated their national reunion and restored covenantal unity under one King as a single entity.
Malachi 2:14–15: “But did He not make them one, having a remnant of the Spirit?”
Question: Why does God refer to husband and wife as “one”? Because He bound two distinct individuals together into a single covenant relationship.
John 10:30: “I and My Father are one.”
Question: Does this statement eliminate the distinct personhood of the Father and the Son? No. The Son and the Father share the same divine essence, nature, authority, indwelling power, and purpose.
John 17:11, 21–23: “...that they may be one as We are one... that they all may be one, as You, Father, are in Me, and I in You...”
Question: When Christ prayed for hundreds and thousands of disciples to be “one,” was He praying for them to lose their individual identities? No. He prayed for absolute unity of faith, mind, love, and mission, patterned directly after the divine unity of the Godhead.
Acts 17:26: “And He has made from one blood every nation of men to dwell on all the face of the earth...”
Question: How can billions of diverse human beings across all nations be called “one blood”? Because humanity shares a single, common origin in Adam.
1 Corinthians 6:16: “Do you not know that he who is joined to a harlot is one body with her? For ‘the two,’ He says, ‘shall become one flesh.’”
Question: Does the number “one” here refer to a single physical frame? No. It refers to an intimate, bodily union governed by shared physical desire and illicit relationship.
1 Corinthians 7:3–4: The mutual authority and ownership that husband and wife exercise over each other’s physical bodies.
Question: What produces this dynamic? The complete reciprocal surrender of self, where two distinct wills align into a single unit.
Ephesians 5:31: “For this reason a man shall leave his father and mother and be joined to his wife, and the two shall become one flesh.”
Question: Is the oneness here purely physical? Paul explicitly connects this “one flesh” dynamic to a profound spiritual mystery reflecting Christ and the Church.
1 John 5:7 (NKJV): “For there are three that bear witness in heaven: the Father, the Word, and the Holy Spirit; and these three are one.”
Question: How do three distinct Persons bear witness in total harmony? They share the same divine essence, testimony, and truth.
1 John 5:8: “And there are three that bear witness on earth: the Spirit, the water, and the blood; and these three agree as one.”
Question: Do three separate historical/spiritual elements become a single physical object? No. Their testimony concurs in unified agreement.
Conclusion
The biblical usage of the word “ONE” frequently describes abstract, relational, and qualitative realities—such as unity of mind, agreement of purpose, harmony of affection, and shared nature.
The word “ONE” in Scripture is not restricted to counting isolated physical objects or solitary individuals.
Thousands of rebels at Babel were counted as One in their rebellion (Genesis 11).
Thousands of believers in the Church are counted as One in their faith (John 17).
Two distinct human beings in marriage are counted as One in covenant and life (Genesis 2; Ephesians 5).
Therefore, when the Bible declares that God is ONE (Deuteronomy 6:4), it perfectly accommodates the Triune reality: Three distinct Divine Persons—the Father, the Son, and the Holy Spirit—existing in complete eternal unity, sharing the same uncreated divine nature and essence.
NOTE: In the next study, we will examine the detailed dictionary and lexical definitions for the terms “One” and “Only.”