What the Trinity Is The Trinity is the Christian faith's central statement about the being of God: there is only one true God, who eternally exists as three persons at the same time, the Father, the Son (Jesus Christ), and the Holy Spirit. Each of the three persons is fully God, yet they are not three gods but one God. This truth stretches beyond human reason, yet it is clearly revealed in Scripture. Although the word "Trinity" itself does not appear in the Bible, the truth it describes runs throughout the whole of Scripture. Two Biblical Foundations The Trinity rests on two biblical foundations. First, there is only one God. "Hear, O Israel: The LORD our God, the LORD is one" (Deuteronomy 6:4). Scripture firmly rejects belief in many gods. Second, the Father, the Son, and the Holy Spirit are each called God. The Father is God (1 Peter 1:2). The Son is God, for "in the beginning was the Word, and the Word was with God, and the Word was God" (John 1:1), and Thomas addressed the risen Jesus as "My Lord and my God!" (John 20:28). The Holy Spirit is God, for Peter told Ananias that to lie to the Holy Spirit was to lie to God (Acts 5:3-4). Hold these two foundations together, and you arrive at the truth of the Trinity. Three Persons, Not Three Roles The Trinity does not mean that one God simply plays three roles, the way one man can be a father, a husband, and a son at once. Scripture shows us real relationships between the three persons. At the baptism of Jesus, all three appear at the same moment: the Son stands in the water, the Father speaks from heaven, and the Spirit descends like a dove (Matthew 3:16-17). Jesus prays to the Father and promises to send the Spirit (John 14:16). They love and glorify one another, yet remain one God. The Great Commission Before ascending to heaven, Jesus commanded his disciples, "Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit" (Matthew 28:19). Notice that it is one "name," under which stand the three persons of Father, Son, and Spirit. This is one of the clearest confirmations of the Trinity in all of Scripture. Why the Trinity Matters Some think the Trinity is merely abstract theology, but it touches the heart of our faith. First, it concerns our salvation: the Father plans to save, the Son accomplishes redemption, and the Spirit applies renewal. Our salvation is the shared work of the triune God. Second, it reveals that God is love in his very being. Before the world was made, the Father, Son, and Spirit already loved one another (John 17:24). Love is not something God acquired later; it is his eternal nature. This is why the statement "God is love" (1 John 4:8) rests on solid ground. A solitary being could not have been love from eternity, but the triune God always has been. Responding With Awe and Trust Our reason cannot fully fathom the Trinity, and this reminds us that God is far greater than we are. "How unsearchable are his judgments and how inscrutable his ways!" (Romans 11:33). We do not need to comprehend God completely in order to worship and trust the living God. In fact, a God small enough to be fully understood would not be worth worshiping at all. May you come to know this three-in-one God more deeply. Download the free BiblePro app and use its multiple translations, audio Scripture, AI verse search, and reading plans to study John, Matthew, and other passages, and let God reveal himself to you through his own word.