Did you know that Moses had to make a third trip to the top of Mount Sinai?
Well, on this trip, Moses arrived at the burning bush after much climbing, removed his sandals, kneeled and prayed to God.
“Oh mighty God, King of the Universe, your people have sent me back here to ask you a question about the Ten Commandments.”
“What question do they have for Me?” roared the voice of God.
“They want to know whether the commandments are listed according to priority.”
From Oy! The Ultimate Book of Jewish Jokes, by David Minkoff