Who can tell me a humorous joke about miracles?

A and B are arguing about whether there are miracles in the world. A: If someone falls from the third floor, it's safe. If it's not a miracle, what is it?

That's luck.

A: What if that person falls down again and is not hurt?

That's a lucky star.

A: What if I fall down again?

B: Oh! That is well trained!