An interesting post ! I'm not Christian, but have respect for those who believe. As a historian, I find it helps to understand the past if I have a little bit of theological understanding.

Logic tells me that appealing to the Bible as the final authority doesn't make sense, because it's a text that has grown and evolved over time, and can differ from denomination to denomination. There are quite a few books that were previously included that are now just part of various apocrypha - often based on inter-denominational politics.

Looking from the outside in, I feel that the Church has historically been most effective when united. Unless we resort to the techniques of the Inquisition, perhaps a more charitable solution might be to stop worrying about the (often minor) differences between denominations and approach things with a bit of mutual forgiveness and open-mindedness. In a sense, agree that unity and love of Christians of whatever denomination is more important than the details of doctrine.