Thanks, I appreciate that! Of course, that's what editing is for as well, but if you use original content from the get-go it's less of a problem. Besides, if we avoid copyrighted ideas, it can only improve the total effort. Nobody likes cliches, except twilight fans!
There's no reason you can't come up with some other reason for his crisis of faith, and it doesn't have to a be a supernatural one either. Maybe do a little research and see what has historically caused people to lose faith. The study of supernatural subjects could be his way of trying to get a grasp of the spiritual world, since he feels that he's lost his.