The Trinity theology was an attempt to overcome problems with Jesus being described as a god because He said He is Son of God. First there is the polytheism problem - "Have no other gods before Me" is the command. Then there is the humanity of Jesus. Trinity theology tried to say Jesus is not just human but is also a god but not only that, He is the same god as the Father - in some philosophical sense He is The God. This gets around the charge of polytheism and the command to have no other gods. Then they tried to find verses to back that up. But actually this was not the answer Jesus Himself gave to the problem when the Jews presented it to Him. His answer was that He is only a god in the sense any mighty person can be called a god. Meanwhile He consustently taught His disciples to regard only the Father as the one true God.
