2 Chronicles 8:7-10

⁷As for all the people that were left of the Hittites, and the Amorites, and the Perizzites, and the Hivites, and the Jebusites, which were not of Israel, ⁸But of their children, who were left after them in the land, whom the children of Israel consumed not, them did Solomon make to pay tribute until this day. ⁹But of the children of Israel did Solomon make no servants for his work; but they were men of war, and chief of his captains, and captains of his chariots and horsemen. ¹⁰And these were the chief of king Solomon's officers, even two hundred and fifty, that bare rule over the people.