A similar situation is found in Exodus when the escaping Israelites are crossing the Red Sea. When G-d lets the waters of the sea return and drown the pursuing Egyptian army, some of the angels began to cheer. G-d says to them "My creations are dying, why are you laughing?"
> "My creations are dying, why are you laughing?"
Well, it's not like they hadn't seen this sort of thing out of their boss before.
Source? I don't recognize this...