The Sunday school teacher was carefully explaining the story of Elijah the prophet and the false prophets of Baal.
She explained how Elijah built the altar, put wood on it, cut the bull in pieces, and laid it on the altar. Then Elijah commanded the people of Israel to fill 4 barrels with water and pour it over the altar. He had them do it 3 times.
"Now," the teacher said, "can anyone tell me why the Lord would have Elijah pour water over the bull on the altar?"
A little girl in the back of the room waved her hand. "I know!" she said. "To make gravy!"