God is a character, a real and consistent being, or He is nothing. If God did a miracle He would deny His own nature and the universe would simply blow up, vanish, become nothing.
I try hard not to preach, but I get carried away, which is a mistake, but it's a risk worth running.
It was Christopher's brilliant concept that he did not want this to become like every other sitcom where you do one take, and the audience gets bored with seeing it ten times, you know, over and over again.