1 Kings 9:20-23

As for all the people who were left of the Amorites, Hittites, Perizzites, Hivites, and Jebusites, who were not of the sons (descendants) of Israel, their children who were left after them in the land, whom the Israelites were unable to completely destroy, from them Solomon levied (conscripted) forced laborers, even to this day (the date of this writing). But Solomon did not make slaves of the sons of Israel; for they were men of war (soldiers), his servants, his officers, his captains, his chariot commanders, and his horsemen. These were the chief officers who were over Solomon’s work, five hundred and fifty, who ruled over the people doing the work.