1 Samuel 17:48-54

48When the Philistine started forward to attack him, David ran quickly to the battle line to meet the Philistine.

49David put his hand in the bag, took out a stone, slung it, and hit the Philistine on his forehead. The stone sank into his forehead, and he fell facedown to the ground.

50David defeated the Philistine with a sling and a stone. David overpowered the Philistine and killed him without having a sword.

51David ran and stood over him. He grabbed the Philistine’s sword, pulled it from its sheath, and used it to kill him. Then he cut off his head. When the Philistines saw that their hero was dead, they fled.

52The men of Israel and Judah rallied, shouting their battle cry, and chased the Philistines to the entrance of the valley and to the gates of Ekron. Philistine bodies were strewn all along the Shaaraim road to Gath and Ekron.

53When the Israelites returned from the pursuit of the Philistines, they plundered their camps.

54David took Goliath’s head and brought it to Jerusalem, but he put Goliath’s weapons in his own tent.