1 Chronicles 10:6

4 Then Saul said to his armor-bearer, “Draw your sword and run it through me, or these uncircumcised men will come and torture me!” But his armor-bearer was terrified and refused to do it. So Saul took his own sword and fell on it.

5 When his armor-bearer saw that Saul was dead, he too fell on his own sword and died.

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

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 cities and ran away. So the Philistines came and occupied their cities.

8 The next day, when the Philistines came to strip the dead, they found Saul and his sons fallen on Mount Gilboa.