1 Samuel 31:6-8

New Century Version

⁶ So Saul, his three sons, and the officer who carried his armor died together that day.

⁷ When the Israelites who lived across the Jezreel Valley and those who lived across the Jordan River saw how the Israelite army had run away, and that Saul and his sons were dead, they left their cities and ran away. Then the Philistines came and lived there.

⁸ The next day when the Philistines came to take all the valuable things from the dead soldiers, they found Saul and his three sons dead on Mount Gilboa.