He knew a great deal of the Bible already, and he knew the Bible believed in all sorts of weird stuff. According to the Bible, God Himself was at least one-third Ghost, and that was just the beginning. You could tell the Bible believed in demons, because Jesus threw a bunch of them out of this guy. Real chuckalicious ones, too. When Jesus asked the guy who had them what his name was, the demons answered and told Him to go join the Foreign Legion. Or something like that.
Stephen King, It
demons, legion, the-bible