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DEFINING THE TRINITY
God Is One—Father, Son, and Holy Spirit
Consolidated manuscript for review
English text with Spanish terminology guidance
TRINITY DEFINED
ONE GODHEAD
Father • Son • Holy Spirit
Truly Distinct • Never Separate • Fully Divine GOD IS ONE
The revelation is biblical; the name is historical.
Purpose of This Study
This study began with a pastoral and linguistic concern rather than a desire to redefine the
historic Christian doctrine of the Trinity. The traditional expression “one God in three Persons” arose in a theological context in which person carried meanings more carefully qualified than the word commonly carries in contemporary English. Today, person ordinarily suggests a distinct, independently existing individual. Applied without explanation to Father, Son, and Holy Spirit, that modern sense can unintentionally suggest three divine individuals who together constitute God.
The purpose of TRINITY DEFINED is therefore not to replace historic Trinitarian faith, but to express its essential biblical boundaries in language less likely to mislead the contemporary reader: ONE GODHEAD — Father • Son • Holy Spirit — Truly Distinct • Never Separate •
Fully Divine — GOD IS ONE. The wording seeks simultaneously to preserve the genuine distinctions revealed in Scripture and the indivisible oneness of God.
How to Read This Definition
This confession summarizes the biblical testimony; it does not replace it. Its phrases belong together, and each helps protect the meaning of the others. The study begins with the scriptural declaration that God is One, considers the revelation of Father, Son, and Holy Spirit, explains its terminology, and then tests the explanation against historical controversies and difficult
passages.
“One Godhead” means the one undivided divine being and nature of God. It does not mean a committee of divine members, three portions of deity, or a fourth reality containing Father, Son, and Holy Spirit. The traditional English word requires explanation; its Spanish equivalent, Deidad, does also.
“Truly Distinct” preserves genuine, eternal distinctions. “Never Separate” preserves the indivisibility of divine being. Neither expression cancels the other. Distinction does not mean division; indivisibility does not mean interchangeability.
“Fully Divine” means fully God: eternal and uncreated, not merely godlike. Each is fully God, but each is not the entire Trinity. Equality of deity does not erase the sending, obedience, or
other relationships Scripture describes.
The Trinity concerns the one God—Father, Son, and Holy Spirit. The incarnation concerns the eternal Son becoming truly human without ceasing to be divine. Christ’s human growth, obedience, suffering, and death must not be dismissed as appearances or treated as evidence that He is a lesser deity.
Throughout this study, biblical testimony, contextual interpretation, and doctrinal synthesis are distinguished. The word Trinity and our explanatory vocabulary are not presented as a complete formula quoted from one verse. They name and summarize the combined testimony of
Scripture.
The concise confession avoids the modern word persons because it can suggest separate divine individuals. This teaching choice does not reject the genuine distinctions that historic Trinitarian use of that word seeks to preserve. Historical vocabulary must be understood in context, not caricatured.
The purpose is faithful understanding leading to worship and obedience. Our confidence belongs to the Word of God; our wording remains accountable to it.
I. God Is One
The doctrine of the Trinity begins not with three, but with One. Before attempting a definition, we receive Scripture’s uncompromising confession that there is only one God.
“Hear, O Israel: The LORD our God is one LORD.” —Deuteronomy 6:4, KJV
Isaiah makes this exclusivity explicit: no God was formed before the Lord, and none will be after
Him (Isaiah 43:10–11); beside Him there is no God (Isaiah 44:6; 45:5). He is not simply the greatest member of a divine class. He alone is God.
Jesus affirms the same confession in Mark 12:29. Paul declares that “there is none other God but one” (1 Corinthians 8:4), and James commends belief that there is one God (James 2:19). The New Testament does not abandon this foundation when it speaks of Father, Son, and Holy Spirit.
Oneness is more than agreement
Several beings can agree perfectly while remaining several beings. Their cooperation would not make them one God. Scripture’s monotheism cannot be reduced to a unity of purpose among independent divine individuals.
At the same time, the Hebrew word echad in Deuteronomy 6:4 should not be made to establish the Trinity by itself. It is the ordinary word for one; its occurrence does not necessarily mean a “compound unity.” The doctrine rests upon the whole biblical witness, not a supposed numerical
formula hidden in a single word.
The starting confession remains intact as revelation unfolds: God is One. Whatever we affirm about Father, Son, and Holy Spirit must preserve that truth.
Revelation before terminology
The confession of Father, Son, and Holy Spirit is not, on the reading defended here, a theological construction imposed upon Scripture. It arises from Scripture’s own revelation of the one God. The later term Trinity gives a concise name to this biblical reality: God is One—Father, Son, and Holy Spirit.
The revelation is biblical; the name is historical. This principle does not deny historical development in interpretation and vocabulary. It distinguishes the scriptural witness from the terminology Christians developed to confess it.
