There are only 3 verses in the bible that, if you had absolutely no prior knowledge of any kind of Christian belief at all, just picked up the bible and started reading it like a novel with no bias whatsoever, might make you wonder if Jesus had some kind of equality with God. Those are:
John 1:1 - this is the trinitarians biggie. Yes, there is a strong case made by many scholars that it should rigorously be translated 'and the Word was God'. However, the fact remains that there are also some reputable scholars that make a strong case that it should not be rendered that way. And there are some bible translations that render it differently, as does the NWT. JW's are not unique on this. So who is right? It boils down to a matter of scholarly opinion. Everyone takes their pick according to their personal bias The point is, however, that the trinitarians view on this verse is open to debate and there is reasonable doubt about it. In a Court of law, if there is reasonable doubt about something the jury cannot convict with certainty.
John 20: 28 - Thomas' saying "My Lord and My God". This is a hard one to get around for non-trinitarians, admittedly. However, who's word has more authority: Thomas' or Jesus' about Jesus identify? Just a few verses earlier in the same chapter of John, Jesus said to Mary "I am ascending to my Father and your Father, and my God and your God". So Jesus is plainly telling Mary that her God was Yahweh, the God the Jews had always worshipped before Christ came onto the scene (the first and foremost Jewish teaching, that Jesus reaffirmed at Luke 4:8). If Jesus was God and knew himself to be God, he would not have said this to Mary and told her to stop clinging to him. He was deliberately taking the emphasis off himself and directing Mary's worship to the Father. So Thomas' comment cannot be taken as categorical because it is contradicted by Jesus own words to Mary on that same day. Also, when Jesus asked his disciples in Matt 16 who people were saying he was, Peter did not say "You are God", or "You are God the Son", like Thomas appears to have said; no, but Peter said "You are the Christ, the son of the living God". Peter made a clear distinction between 'the living God' and Jesus. So who is right, Jesus and Peter, or Thomas? Is the bible contradicting itself? Obviously not. Peter and Jesus own statements about Jesus true identify have more weight than some off-hand comment by Thomas, so we must look at Thomas' unusual statement in a different light.
John 10: 30 "I and the Father are one". Trinitarians love this 'proof text'. Yet it really isn't even in the ball-park. An unbiased reading of the context shows that Jesus was merely describing oneness of thought and purpose, just as he prayed for his disciples to all be 'one' just as he was 'one' with the Father.
There are a few other 'proof texts' that trinitarians rely on, but you would only read that Jesus was God in those texts if you were approaching them with a trinitarian bias. Trinitarians have to force and extrapolate these other verses to mean something that is not obvious at first. No totally impartial reader would ever read these other few texts as suggesting that Jesus was God.