1 Samuel 31:8
And it came to pass on the morrow, when the Philistines came to strip the slain, that they found Saul and his three sons fallen in mount Gilboa. And it came to pass on the morrow, when the Philistines came to strip the slain, that they found Saul and his three sons fallen in mount Gilboa.
The verse records the morning after the battle, when the Philistines came to strip the slain and found the dead on Mount Gilboa. Those fallen were Saul and his three sons, cut down before the Philistines in that defeat of Israel. The battle at Gilboa itself belonged to the Philistines' advance against Israel in the plain of Jezreel, which forms its wider setting.