1 Chronicles 10:6-8

Amplified Bible

⁶ So Saul died with his three sons and all those of his house died together.

⁷ When all the men of Israel who were in the valley saw that the army had fled, and that Saul and his sons were dead, they abandoned their cities and fled; and the Philistines came and lived in them.

⁸ It came about the next day, when the Philistines came to strip (plunder) the slain, that they found Saul and his sons fallen on Mount Gilboa.