Derek says on the term Trinity: “In Genesis 1:26, we are again confronted with the combination of singular and plural in reference to God: ‘Then God said, “Let Us make man in Our image, according to Our likeness.” The verb said is singular in form, the pronouns Us and Our are plural. “This combination of singular and plural in reference to God recurs in other passages of Scripture. The prophet Isaiah had a vision of the Lord on His throne and then heard Him say, ‘Whom shall I send, and who will go for Us?’ (Isaiah 6:8). The pronoun ‘I’ implies that one Person is speaking, but the pronoun ‘Us’ indicates that He is no longer speaking on behalf of more than one Person. “In the ongoing revelation of Scripture, three distinct Persons emerge, each of whom is God: God the Father, God the Son and God the Holy Spirit. The first of the three divine Persons referred to individually in Scripture is the Spirit: ‘The Spirit of God was moving over the surface of the waters’ (Genesis 1:2, NASB).
“We can never explain God, but He has provided us in the world He has created with various parables that reveal Himself. One of these is light. Light is a part of everyday life to which we do not normally give much thought. Yet in this single phenomenon we discern plurality in at least two forms.“Light is regularly refracted into the three primary colors: blue, yellow and red. Again, in the rainbow, light appears in seven colors: violet, indigo, blue, green, yellow, orange, red. Thus, within the unity of light, there is the trinity of the primary colors and the sevenfold diversity of the rainbow. “Throughout Scripture seven is the number particularly associated with the Holy Spirit. Revelation 4:5 speaks of ‘the seven Spirits of God.’ In Isaiah 11:1–2 the prophet shows how the Holy Spirit will set apart Jesus as the Messiah (the Anointed One) and lists seven distinct aspects of the Holy Spirit: the Spirit of the Lord (the Spirit who speaks in the first person as God); the Spirit of wisdom; the Spirit of understanding; the Spirit of counsel; the Spirit of strength; the Spirit of knowledge; and the Spirit of the fear of the Lord.
“It is significant that, even in Jesus Himself, knowledge needs to be balanced by the fear of the Lord. Otherwise knowledge on its own can become a source of pride. ‘Knowledge puffs up [makes arrogant]’ (1 Corinthians 8:1).
“In Acts 13:2 the Holy Spirit is plainly presented as being Himself God. To the leaders of the church in Antioch, ‘The Holy Spirit said, “Now separate to Me Barnabas and Saul for the work to which I have called them.”’ Clearly the Spirit is speaking here in the first person as God.” — quoted from B44 Who Is the Holy Spirit?
Derek also says: “The word trinity does not occur in Scripture. I prefer to say ‘the Godhead’ or ‘the triunity of the Godhead’ in which there are three persons but one God. I don’t have any problem with that. I don’t know whether other people do. I just got used to it, that’s the way it is. It could have been otherwise, but it isn’t. I find that truth runs all through the Bible from the opening verse of Genesis.” —quoted from 1102 “Hebrews 1:1 – 1:14”