1 Kings 9:19-22

19and all the storage cities [for surplus provisions] which Solomon had, and the cities for his chariots and cities for his horsemen, and whatever it pleased Solomon to build in Jerusalem, in Lebanon, and in all the land under his rule.

20As for all the people who were left of the Amorites, Hittites, Perizzites, Hivites, and Jebusites, who were not of the sons (descendants) of Israel,

21their 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).

22But 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.