1 Samuel 8:12

He will appoint some for himself as commanders of thousands and of fifties, and others to plow his ground, to reap his harvest, and to make his weapons of war and equipment for his chariots.

And he will appoint him captains over thousands, and captains over fifties; and will set them to ear his ground, and to reap his harvest, and to make his instruments of war, and instruments of his chariots.