1 Samuel 31:6-8

New King James Version

⁶ So Saul, his three sons, his armorbearer, and all his men died together that same day.

⁷ And when the men of Israel who were on the other side of the valley, and those who were on the other side of the Jordan, saw that the men of Israel had fled and that Saul and his sons were dead, they forsook the cities and fled; and the Philistines came and dwelt in them. ⁸ So it happened the next day, when the Philistines came to strip the slain, that they found Saul and his three sons fallen on Mount Gilboa.