I draw the line at scientific facts really. The authors of the Bible were (in my personal believe anyway) writing down what God wanted humans to know. God was more concerned with humans understanding moral truths rather than scientific truths. I mean the Book of Genesis has two different creation stories in it. I don't believe Genesis is suppose to be taken literally but as a way of demonstrating that God made the universe and God is all power. I do believe that Jesus did miracles that defy all understanding, though. I think the Bible has a lot of parables in it that some Christians mistake for fact. In short, there is a reason that Jesus didn't end his sermon on the mount with a lesson in physics. It's because Jesus was more concerned with us living morally rather than humans having basic understanding of science.