1 Samuel 14:20-22

20Then Saul and all the people who were with him rallied and went into the battle. And behold, every Philistine’s sword was against his fellow, and there was very great confusion. 21Now the Hebrews who had been with the Philistines before that time and who had gone up with them into the camp, even they also turned to be with the Israelites who were with Saul and Jonathan. 22Likewise, when all the men of Israel who had hidden themselves in the hill country of Ephraim heard that the Philistines were fleeing, they too followed hard after them in the battle.