2 Chronicles 8:7-10

8:7 Now several non-Israelite peoples were left in the land after the conquest of Joshua, including the Hittites, Amorites, Perizzites, Hivites, and Jebusites. 8:8 Their descendants remained in the land (the Israelites were unable to wipe them out). Solomon conscripted them for his work crews and they continue in that role to this very day. 8:9 Solomon did not assign Israelites to these work crews; the Israelites served as his soldiers, officers, charioteers, and commanders of his chariot forces. 8:10 These men worked for Solomon as supervisors; there were a total of 250 of them who were in charge of the people.