1 Samuel 8:10-12

10So Samuel told all the words of the Lord to the people who asked him for a king.

11And he said, “This will be the behavior of the king who will reign over you: He will take your sons and appoint them for his own chariots and to be his horsemen, and some will run before his chariots.

12He will appoint captains over his thousands and captains over his fifties, will set some to plow his ground and reap his harvest, and some to make his weapons of war and equipment for his chariots.