@ghost-of-a-duke said
Go have a quiet read of the baptism of Jesus where we have the 3 main protagonists (the son, Father and Holy Spirit) interacting with each other as clearly separate entities and then (with your own reasoning) calibrate that with the Trinity.
"Let us make man in our image..." the Spirit of God, the Son of God, if not God, then why call them the Spirit of God and God's Son in scripture? That Genesis quote, among other such texts, points to the trinity, not three different Gods, there is but One. God is One; there is nothing about Him in a conflict in His nature at all at any point in any time. No shadow of turning would be impossible for us as we are constantly changing, altering our views, positions, looking at things differently, not so God, and not so God in the Father, Son, and Holy Spirit. They are in a perfect loving relationship with each other and have been for eternity; God is not improving. God does nothing that alters God's nature that God isn't God anymore by becoming less than He is. God is not created. He is the prime reality; everything is due to Him and is maintained by Him.