1 Samuel 7:3-6

Samuel spoke to the whole group of Israel, saying, “If you’re turning back to the LORD with all your hearts, you must remove your foreign gods and your idols of Ashtoreth. You must give yourselves fully to the LORD and serve only him. Then he will save you from the Philistines.” So the Israelites put away their idols of Baal and Ashtoreth, and they served only the LORD. Samuel said, “All Israel must meet at Mizpah, and I will pray to the LORD for you.” So the Israelites met together at Mizpah. They drew water from the ground and poured it out before the LORD and fasted that day. They confessed, “We have sinned against the LORD.” And Samuel served as judge of Israel at Mizpah.