Gaebelein's Annotated Bible
And it came to pass after this, that the king of the children of Ammon died, and Hanun his son reigned in his stead.7. The War with Ammon and the Syrians
1. David and Hanun (2Samuel 10:1-5)
2. Ammon and the Syrians smitten (2Samuel 10:6-19)
The chapter with the war against Ammon and the Syrians is the prelude to the great sin of David. While Joab is carrying on the siege of Rabbah, the last city of the Ammonites, David, no doubt flushed with the great victory and prosperity, remained in his house and committed his awful sin. The war with Ammon originated through the insults which Hanun the King of Ammon had heaped upon David’s ambassadors. David wanted to show kindness also to Hanun as his father Nahash had shown kindness to David. We have no record of this kindness. In this endeavour David did certainly not follow the right course, for Ammon was an enemy, and while Nahash showed some kindness to David during his exile, he also had reproached Israel and was ready to thrust out the right eyes of the men of Jabesh-gilead (1Samuel 11:1-3). Hanun’s deed in treating David’s peaceful messengers in so shameful a way showed that he was a wicked man like his father and not worthy of David’s kindness. Had he inquired of the Lord the messengers would have been spared these indignities. Ammon then formed an alliance with the Syrians, but Joab smote them. The greatest victory is recorded in verses 15-19. The king appeared himself to lead his hosts against the mighty foe and their overthrow followed. It foreshadows the day of final victory over the rebellious nations, led by the beast (Revelation 19:19-20) when the true King comes to fight against those nations.