I Samuel 8:11

11 And he said, This is the sort of king who will be your ruler: he will take your sons and make them his servants, his horsemen, and drivers of his war-carriages, and they will go running before his war-carriages;

11 He said, "This is what the king who will reign over you will claim as his rights: He will take your sons and make them serve with his chariots and horses, and they will run in front of his chariots.