Of course, you might be seeing a contradiction between, for instance, Calvin and the Bible because of another interpretation that is colouring your understanding of one or the other or both. Perhaps, IOW, you are seeing a contradiction where someone else would not due to each of you having different influences on your understanding of scripture. How much of what we see in the Bible or any writing is really our understanding being coloured by what we've read, learned, heard about that writing before?
All of which is a round about way of saying that no one alive today (and, I emphasize, no one) has a pure, unfiltered understanding of the Bible. It is a 2000 year-old collection of texts and everyone alive sees it through the lenses and filters that have built up over those 2000 years.