1) Well Godzilla always gets defeated in the end, but he always comes back, so I think the eternal struggle of Jehovah vs. Godzilla would ensue. However, since I like Godzilla better, I'd hope he won!
2)The movie would be filmed in Brooklyn, with screaming Bethelites and everything!
3)The movie would star Ian McKellan as Jehovah, and Rene Russo as his earthly handmaiden, who is always seen screaming in the close up shots. "Jehovah, save us, it's Godzilla!! He's using your name in vain!"
4) The sound track should definitely start out with the Bethelites singing some good ol' dub songs, just before the ceiling crashes down on them and Godzilla shoots his fiery breath on the whole congregation.