Gabriel, a relatively knew Christian, asks Trinitarians five questions:

1. Where does Jesus teach that God is a three person being, a Trinity?

Compare John 18:20

2. Where do the apostles teach Jesus is God after he leaves earth?

Compare Acts 2:22

3. Where do the apostles teach that God is a three person being, a Trinity?

Compare Ephesians 4:6

4. Where does the Bible teach that we must believe that God is a three person being to be a Christian or to be saved?

Compare Deuteronomy 6:1, Galatians 3:20

5. Where does the Bible say that we must believe that Jesus is God to be saved?

Compare John 20:31

Bonus question: Where does God teach that he is a three person being?