"One more story from the Bible, about King David. He slept with a married woman, Bathsheba, and got her pregnant. In order to cover up his transgression, David arranged for Bathsheba's husband, a soldier, to die in battle. David then took Bathsheba as his own wife. God sent a prophet named Nathan to let David know this behavior was unacceptable. But how does a lowly prophet go about imparting such a message to the king of Israel? Nathan told him a story. He described to David two men, one rich and one poor. The rich man had huge flocks of animals; the poor man had just one little lamb, whom he treated like a member of his family. One day a traveler came through. The rich man, Nathan told King David, was happy to feed the traveler but he didn't want to take a sheep from his own flock. So he took the poor man's only lamb, killed it, and served it to the traveler. The story enrages David: "The man who did this deserves to die," he says. "That man," Nathan tells him, "is you." Case closed. Nathan didn't berate David with rules--Hey, don't covet your neighbor's wife! Hey, don't kill! Hey, don't commit adultery!--even though David had broken all of them. He just told a story about a lamb. Very persuasive."