1 Samuel 7:4-7

So the people of Israel put away the Baals and the Ashtaroth, and they served the LORD only. Then Samuel said, “Gather all Israel at Mizpah, and I will pray to the LORD for you.” So they gathered at Mizpah and drew water and poured it out before the LORD and fasted on that day and said there, “We have sinned against the LORD.” And Samuel judged the people of Israel at Mizpah. Now when the Philistines heard that the people of Israel had gathered at Mizpah, the lords of the Philistines went up against Israel. And when the people of Israel heard of it, they were afraid of the Philistines.