Jason's final words in the book are:
I have a religion, but I have no faith. Maybe one day I'll find a deity I can believe in. Until then, my god is made of steel and rust. (31.52)
Our intrepid agnostic-slash-atheist knows he doesn't believe in the God of Catholicism—and though he founded Chutengodianism, he never truly believes in the water tower's divinity either. While he envies those who believe in something, a constant for this character is his sense that he is without a god. In a word, he is godless.