Do some Christians need prejudice?

I identify myself as Lutheran, but I'll readily reject any Lutheran doctrine that doesn't agree with the Bible (of course, I would carefully analyze the doctrine and the Bible before I would ever do such a bold thing, but you get the point). I take the Bible as the authoritative, inerrant, and true Word of God. I believe that you don't necessarily have to believe this view about the Bible to get into heaven, but I'm not as sure as to whether or not you can reject the authority of the Bible and still get into heaven. The appropiate analogy is that you don't have to be baptized to be saved (ie: thief on the cross), but rejecting the saving grace of baptism is a much more trickier situation.