What does the Bible teach about the Trinity?

The Trinity is a biblical teaching that affirms two truths at the same time: 1. There is one God (Deuteronomy 6:4). 2. That one God reveals Himself in three Persons: Father, Son, and Holy Spirit (Matthew 28:19; 2 Corinthians 13:14).

The word "Trinity" does not appear literally in the Bible, but the concept does: the Father is called God, the Son is called God, and the Holy Spirit is called God, and yet Scripture insists God is one (John 1:1, 14; Acts 5:3–4; 1 Corinthians 8:4).

In Jesus’ baptism this reality is seen clearly: the Son is being baptized, the Spirit descends, and the Father’s voice speaks from heaven (Matthew 3:16–17). Jesus also spoke of the Father and the Spirit as distinct Persons, not as "roles" of one person (John 14:16–17).

The Bible also shows that within the Trinity there is order in missions: the Father sends the Son, and the Father and the Son send the Spirit, without that making the Son or the Spirit "less God" (John 20:21; John 14:26; John 15:26).

In summary: one God in three Persons. It is not "three gods," but a divine unity that surpasses what the human mind can fully explain (Psalm 145:3).