This is the foundational thesis of the book: There is a biblical metaphysic, and it is discernable. And that biblical metaphysic does not align with most secular metaphysics. Despite the fact that most Christians seem to think they can adopt whatever metaphysic they want, that is not a true Christian metaphysic.
I would say that most US Christians, of whatever variety, are default natualists in their metaphysic. They might say that they believe in God and Christ—they may even pray—but their default way of life betrays them. They don't really expect God to "show up." And when he does, they are surprised.
If you pray and don't expect to see an answer, what does that say about your faith? Or, worse yet, you don't bother because you think it's too trivial for God's attention, what does that say about your faith?
Ponder that as we continue through the book…