Some time afterwards, when Nahash, king of the Ammonites, died, David, who had been on friendly terms with him, sent an embassy to his son Hanun, with messages of condolence. This courtesy only roused suspicion in Rabbath-Ammon, the capital of the Ammonites. The new king's counsellors impressed him with the idea that David had sent his ambassadors as spies to Rabbah, in order to discover their weakness, to conquer them, and to deliver them over to the same fate that had befallen the Moabites. Hanun was so carried away by his suspicions that he offered an insult to the king of Israel which could not be passed over unnoticed. He obliged the ambassadors, whose persons, according to the laws of nations, were inviolable, to have their beards shaved off on one side, and their garments cut short, and thus disgraced he drove them out of the country. The ambassadors were ashamed to appear at Jerusalem in this guise, but they informed David of the occurrence. He immediately prepared himself for battle, and the militia was called out; the old warriors girded their loins, and the Cherethite and Pelethite mercenaries sallied forth with their heroic leader Benaiah at their head. Hanun, who feared the valor of the Israelites, looked around for help, and engaged mercenary troops from among the Aramæans, who lived in the regions between the mountains of Hermon and the banks of the Euphrates. Hadadezer, king of Zobah on the Euphrates, contributed the greatest number--20,000 men. David did not personally conduct this war, but left the supreme command with the careful and reliable Joab. Having led the Israelite army across the Jordan, Joab divided it into two bodies. With the one he attacked the Aramæans, the other he left under the command of his brother Abishai. He aroused the enthusiasm of his army by inspiring words: "Let us fight bravely for our people and the city of our God, and may the Lord God do what seemeth good unto Him." Joab then dashed at the Aramæans, and put them to flight. On this, the Ammonites were seized with such fear that they withdrew from the field, and took shelter behind the walls of their capital. It was a most successful achievement. Joab hurried to Jerusalem to report to the king, and to lay before him a plan by which the Aramæans might be totally annihilated, and any future interference on their part prevented. The victorious army, having been recalled from the Ammonitish territories, was reinforced, and with the king himself at its head pursued the Aramæan enemy on the other side of the Jordan. King Hadadezer, on his part, also sent fresh troops to the aid of his defeated forces, but in a battle at Helam, the Aramæan army was again defeated, and its general, Shobach, fell in the encounter. The vassals of the mighty Hadadezer then hastened to make peace with David.