1 Samuel 7:7-9

7When the Philistines heard that Israel had assembled at Mizpah, the rulers of the Philistines came up to attack them. When the Israelites heard of it, they were afraid because of the Philistines.

8They said to Samuel, “Do not stop crying out to the Lord our God for us, that he may rescue us from the hand of the Philistines.”

9Then Samuel took a suckling lamb and sacrificed it as a whole burnt offering to the Lord. He cried out to the Lord on Israel’s behalf, and the Lord answered him.