The Bible teaches there is but one God. This is called monotheism. “Hear, O Israel: The Lord our God, the Lord is one” (Deuteronomy 6:4 niv). Jesus quoted this scripture in Mark 12:29, confirming that there is just one God. So how is it that people call God a Trinity—how, some people ask, can there be three Gods, yet one?
God being a Trinity does not mean there are three Gods. God exists as three persons, yet he is one being. Each person of the Trinity—the Father, the Son, and the Holy Spirit—has a separate identity while yet possessing the full nature of God.
Jesus is the divine Son of God. This does not mean that Jesus was created by God. In fact, Scripture tells us plainly that he has always co-existed with God (see John 1:1-3). Jesus himself declared he had eternally co-existed with his Father. And on the basis of that declaration the Jewish leaders plotted to kill him, saying, “He called God his Father, thereby making himself equal with God” ( John 5:18). Paul the apostle declared Jesus to be deity. “Christ himself was an Israelite as far as his human nature is concerned. And he is God, the one who rules over everything and is worthy of eternal praise!” (Romans 9:5). The writer of Hebrews says, “The Son radiates God’s own glory and expresses the very character of God” (Hebrews 1:3).