1 Samuel 7:9

7:9 So Samuel took a nursing lamb and offered it as a whole burnt offering to the Lord. Samuel cried out to the Lord on Israel’s behalf, and the Lord answered him.

1 Samuel 12:19

12:19 All the people said to Samuel, “Pray to the Lord your God on behalf of us – your servants – so we won’t die, for we have added to all our sins by asking for a king.”