Then it happened in the spring, at the time when kings go out to battle, that Joab led out the army and ravaged the land of the sons of Ammon, and came and besieged Rabbah. But David stayed in Jerusalem. And Joab struck Rabbah and overthrew it.David took the crown of their king from his head, and he found it to weigh a talent of gold, and there was a precious stone in it; and it was placed on David’s head. And he brought out the spoils of the city, a very great amount.He brought out the people who were in it, and put them to work at saws, iron picks, and axes. And David did the same to all the cities of the sons of Ammon. Then David and all the people returned to Jerusalem.
( For only Og king of Bashan was left of the remnant of the Rephaim. Behold, his bed was a bed of iron; it is in Rabbah of the sons of Ammon. Its length was nine cubits, and its width four cubits by the usual cubit.)
Then David said to the messenger,“ This is what you shall say to Joab:‘ Do not let this thing displease you, for the sword devours one as well as another; fight with determination against the city and overthrow it’; and thereby encourage him.”