JOAB BESIEGES RABBAH. (Sa2 11:1) at the time when kings go forth to battle--The return of spring was the usual time of commencing military operations. This expedition took place the year following the war against the Syrians; and it was entered upon because the disaster of the former campaign having fallen chiefly upon the Syrian mercenaries, the Ammonites had not been punished for their insult to the ambassadors. David sent Joab and his servants . . . they destroyed the children of Ammon--The powerful army that Joab commanded ravaged the Ammonite country and committed great havoc both on the people and their property, until having reached the capital, they besieged Rabbah-- Rabbah denotes a great city. This metropolis of the Ammonites was situated in the mountainous tract of Gilead, not far from the source of the Arnon. Extensive ruins are still found on its site.