The Bible doesn’t use the word Trinity which Tertulliian coined, but the Trinity does exist in the Bible: Matthew 28:19 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, John 10:30 I and the Father are one.” John 1:1 In the beginning was the Word, and the Word was with God, and the Word was God. 1 John 5:7 For there are three that testify: John 14:26 But the Helper, the Holy Spirit, whom the Father will send in my name, he will teach you all things and bring to your remembrance all that I have said to you. John 15:26 “But when the Helper comes, whom I will send to you from the Father, the Spirit of truth, who proceeds from the Father, he will bear witness about me. John 1:14 And the Word became flesh and dwelt among us, and we have seen his glory, glory as of the only Son from the Father, full of grace and truth. Matthew 28:18-20 And Jesus c