What I see you doing here is going back to the text to find justification for what you already want to believe. Of course there are passages in the Bible that seem to allude to the trinity. That doesn't mean that it was always there, or that it's the only way to interpret the Bible. If the trinity were so obvious, why didn't it become doctrine until the Council of Nicea in 325 AD? What about all the people - good Christians, all - who argued against trinitarianism in the early church?