1 Samuel 8:5; 1 Samuel 8:19-20

5 and they said to him, Behold, you are old, and your sons don't walk in your ways: now make us a king to judge us like all the nations.
19 But the people refused to listen to the voice of Shemu'el; and they said, No: but we will have a king over us, 20 that we also may be like all the nations, and that our king may judge us, and go out before us, and fight our battles.