Now the Philistines fought against Israel; the Israelites fled before them, and many fell slain on Mount Gilboa.
References for 1 Chronicles 10:1
The Philistines pressed hard after Saul and his sons, and they killed his sons Jonathan, Abinadab and Malki-Shua.
The fighting grew fierce around Saul, and when the archers overtook him, they wounded him.
Saul said to his armor-bearer, "Draw your sword and run me through, or these uncircumcised fellows will come and abuse me." But his armor-bearer was terrified and would not do it; so Saul took his own sword and fell on it.
When the armor-bearer saw that Saul was dead, he too fell on his sword and died.
So Saul and his three sons died, and all his house died together.
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.