The believer today needs to recognize that the world can be overcome only by faith and confidence in God. Let’s move ahead to the fortieth verse, as David went forth: Then he took his staff in his hand; and he chose for himself five smooth stones from the brook, and put them in a shepherd’s bag, in a pouch which he had, and his sling was in his hand. And he drew near to the Philistine. We are told here that he took with him five smooth stones. Some people believe that David chose five stones so that