that is, their descendants who were left in the land after them, whom the children of Israel had not been able to destroy completely--from these Solomon raised forced labor, as it is to this day.
1 Kings 9:21
Surrounding context
9:20 All the people who were left of the Amorites, Hittites, Perizzites, Hivites, and Jebusites, who were not of the children of Israel--
9:21 that is, their descendants who were left in the land after them, whom the children of Israel had not been able to destroy completely--from these Solomon raised forced labor, as it is to this day.
9:22 But of the children of Israel Solomon made no forced laborers, because they were men of war and his servants: his officers, his captains, commanders of his chariots, and his cavalry.