The Trinity is a very misunderstood topic, and unfortunately those misunderstandings usually begin with the church. A theological battle or sorts was waged in the 3rd and 4th centuries, and is still being waged today, to help codify what the church had always taught but had never realized it needed to codify. There are four streams of thought on the Trinity: 1) the orthodox view, One God, three persons; each co-equal with the other; 2) One God where Jesus is either a subordinate or lesser god, or a man; 3) that each, the Father, the Son and the Holy Spirit are each separate gods, and 4) that God is one being that manifests Himself as three different beings at different times, sometimes the Father, sometimes the Son and sometimes the Holy Spirit. I subscribe to view number one, the orthodox view, which was believed from the beginning. Believe it or not the church fought off the other three views for the first three centuries, which is why it sought to codify the biblical view with a dev...
"But that He (Jesus) is Himself in His own right ... God, and Lord, and King Eternal, and the Incarnate Word, proclaimed by all ..." Irenaeus, Bishop of Lyons