I fully agree! There's so much that people don't see at first glance. One of the things that I think is amazing is all the foreshadowing and 'types' throughout the Old Testament that point to Jesus. And of course those were written more than 800 years before Jesus' birth.
And this will probably sound crazy to nonbelievers, but I love how the bible is alive and active... because God speaks to us through His word. So sometimes when you read it, a particular verse will stand out on the page... like its being highlighted, and that particular verse will just speak straight to you, in a way that's hard to describe, but I'm sure you know what I mean.