1 Samuel 7:5-9

Then Samuel told them, “Gather all of Israel to Mizpah, and I will pray to the LORD for you.” So they gathered at Mizpah and, in a great ceremony, drew water from a well and poured it out before the LORD. They also went without food all day and confessed that they had sinned against the LORD. (It was at Mizpah that Samuel became Israel’s judge.) When the Philistine rulers heard that Israel had gathered at Mizpah, they mobilized their army and advanced. The Israelites were badly frightened when they learned that the Philistines were approaching. “Don’t stop pleading with the LORD our God to save us from the Philistines!” they begged Samuel. So Samuel took a young lamb and offered it to the LORD as a whole burnt offering. He pleaded with the LORD to help Israel, and the LORD answered him.