20 Then in the spring when kings often march out to war, Yoav led the army out for war and he devastated the land of the Ammonites. Then he reached the capital, Rabbah, and he besieged it while David stayed in Yerushalem. Yoav defeated Rabbah and demolished the city.[ref] 2 Then David took their king’s crown off his head—it was gold with a valuable gemstone set in out, and weighed thirty kilograms. He put the crown on his own head, plus he took a very large amount of plunder out of the city. 3 Then they took all the people out of the city and forced them to work with saws and iron picks, and axes. David did that for the people of all the Ammonite cities, then he returned to Yerushalem with his army.