Can't remember the title, but I read a book on Christian apologetics a few years back. None of it really resonated with me except the fact of how insanely unlikely it is for our universe to exist.

When numbers get that big, it's hard to wrap your head around them but imagine the odds of the cells inside a woman randomly configuring themselves in such a way as to cause immaculate conception. The odds of our universe existing randomly are about a billion (billion, billion etc) times less likely.