1 Samuel 17:50-58

That’s how David beat the Philistine—with a sling and a stone. He hit him and killed him. No sword for David! Then David ran up to the Philistine and stood over him, pulled the giant’s sword from its sheath, and finished the job by cutting off his head. When the Philistines saw that their great champion was dead, they scattered, running for their lives. The men of Israel and Judah were up on their feet, shouting! They chased the Philistines all the way to the outskirts of Gath and the gates of Ekron. Wounded Philistines were strewn along the Shaaraim road all the way to Gath and Ekron. After chasing the Philistines, the Israelites came back and looted their camp. David took the Philistine’s head and brought it to Jerusalem. But the giant’s weapons he placed in his own tent. * * * When Saul saw David go out to meet the Philistine, he said to Abner, commander of the army, “Tell me about this young man’s family.” Abner said, “For the life of me, O King, I don’t know.” The king said, “Well, find out the lineage of this raw youth.” As soon as David came back from killing the Philistine, Abner brought him, the Philistine’s head still in his hand, straight to Saul. Saul asked him, “Young man, whose son are you?” “I’m the son of your servant Jesse,” said David, “the one who lives in Bethlehem.”