Unobservant?

I was reading John last night, from chapter 11 to the end. There were a number of details I swear I've never, ever read before. Not enormously significant things, but still... after 19 years of being a Christian, is it even possible that there are things in the Bible I haven't read? Particularly one of the gospels, which is more likely to be familiar to me than, say, Habakkuk.