Many people are surprised to learn the word Trinity isn’t in the Bible.
Trinity reflects the nature of God, one God, with three distinct parts: the Father (creator), the Son, Jesus (savior), and the Holy Spirit (guide). I understand Trinity to mean “three in one.” It’s not a polytheistic implication, as some people assume, but an acknowledgement of God’s character. Just as I relate to my wife in different ways (friend, partner, lover, and so forth), depending on the situation, God can reveal himself to us through different personas – and we must accept all three.
Not able to find Trinity in the Bible, I looked for mentions of Father, Son, and Holy Spirit in the same verse. Matthew 28:19 is the only place I can find all three – and it’s a most significant circumstance. In baptism, all three aspects of God’s person are affirmed – and with equal standing.
We must do the same, equally embracing God as Father, Son, and Holy Spirit. Our true worship of God should be to all three unified parts of his singular reality.
[A most helpful book on the subject is The Threefold Art of Experiencing God by Christian A. Schwarz.]