And, they routed the much bigger force by the Law of Allah, as David, who was one of the officers of Saul, slew the mighty commander, Goliath. Then Allah honored David with a powerful kingdom, along with wisdom and sound judgment, and commissioned him for the special Office of Knowledge. We have decreed that those who spend their youth in righteousness, i.e., benefiting humanity, shall be granted knowledge and wisdom ((12:22), (28:14)). The annihilation of the mighty armies of Goliath bears a historical lesson for mankind that if Balance in Nature were not one of the Laws, tyrants would ransack the earth and its inhabitants unopposed. But, oppression brings revolution and eventually, the oppressed overthrow the oppressors (22:39). Allah is Limitless in His Bounties to the Worlds.