The greatest enemy for the God of Abraham might be Santa Claus. Many Christian parents think nothing of of telling their children stories of this character that they themselves don't believe in, not considering the repercussions of doing so.
Eventually the kids will learn of the deceit. When they do, some of them start to wonder what else their folks might be making up. They may notice that stories from the Bible are equally farfetched, & that they've never seen God or Jesus in reality.
Those who lose faith in Santa may also
graduate from their parents religion as well.