1 Chronicles 10:5-7

New International Version

⁵ When the armor-bearer saw that Saul was dead, he too fell on his sword and died. ⁶ So Saul and his three sons died, and all his house died together.

⁷ When all the Israelites in the valley saw that the army had fled and that Saul and his sons had died, they abandoned their towns and fled. And the Philistines came and occupied them.