1 Samuel 14:20-23

Then Saul and all his men rushed out to the battle and found the Philistines killing each other. There was terrible confusion everywhere. Even the Hebrews who had previously gone over to the Philistine army revolted and joined in with Saul, Jonathan, and the rest of the Israelites. Likewise, the men of Israel who were hiding in the hill country of Ephraim joined the chase when they saw the Philistines running away. So the LORD saved Israel that day, and the battle continued to rage even beyond Beth-aven.