The story of David fighting and defeating Goliath is probably the most well-known of all the stories about David. It is an important reminder that God is in the giant-defeating business when those giants stand opposed to His plans. And it has inspired many underdogs to press on against a stronger foe. But skeptics have asked: “Could a boy really have killed a mighty warrior with just a sling and stone? Does the author of 1 Samuel exaggerate...