1 Samuel 7:5-7

Samuel said, “Gather all Israel together 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 Israelites at Mizpah. Now when the Philistines heard that the Israelites had gathered at Mizpah, the lords (governors) of the Philistines went up against Israel. And when the Israelites heard it, they were afraid of the Philistines.