The Free Thinking Argument: if naturalism is true, humans cannot freely think; but humans can freely think; therefore naturalism is false — and the best explanation is the biblical God.

Stratton's core argument: if naturalism is true (only nature exists), then everything about humanity is caused and determined by physics and chemistry. If physics and chemistry determine all your thoughts, then if you're determined to hold a false belief, it's impossible for you to reach a better or true belief. But you CAN reach true beliefs — so not all beliefs are determined by nature. This means you have libertarian free will, which implies something supernatural about humanity, and the best explanation is God.