1 Samuel 8:1-6

And it came to pass, when Samuel was old, that he made his sons judges over Israel. Now the name of his firstborn was Joel; and the name of his second, Abiah: they were judges in Beer-sheba. And his sons walked not in his ways, but turned aside after lucre, and took bribes, and perverted judgment. Then all the elders of Israel gathered themselves together, and came to Samuel unto Ramah, and said unto him, Behold, thou art old, and thy sons walk not in thy ways: now make us a king to judge us like all the nations. But the thing displeased Samuel, when they said, Give us a king to judge us. And Samuel prayed unto the LORD.