He defeated the Moabites. He made them lie on the ground and then used a rope to measure them off. He put two-thirds of them to death and spared the other third. ¹  The Moabites became David’s subjects and brought tribute. ² 

He removed ¹  the people who were in it and made them do hard labor with saws, iron picks, and iron axes, putting them to work at the brick kiln. This was his policy ²  with all the Ammonite cities. Then David and all the army returned to Jerusalem. ³