The Christian claim is: Nothing explains the facts better than an all-powerful, all-knowing, omnipresent god creating the universe and sending Jesus to spread his message. This is about as remarkable a claim as could be stated, and yet it is tossed out lightly. Christians seem to imagine that "God did it" is as plausible as the natural explanation that stories grow with the retelling. The Christian has the burden of proof, and it's an enormous burden given this enormous claim.