Commentaries
20:1-8 David's wars. - Though the Lord will severely correct the sins of his believing people, he will not leave them in the hands of their enemies. His assistance will overcome all advantages of number and strength of those that defy his Israel. All that trust in Christ, shall be made more than conquerors through him that loveth them.
CHAPTER 20
1Ch 20:1-3. Rabbah Besieged by Joab, Spoiled by David, and the People Tortured.
1. at the time when kings go out to battle—in spring, the usual season in ancient times for entering on a campaign; that is, a year subsequent to the Syrian war.
Joab led forth the power of the army, and wasted the country … of Ammon—The former campaign had been disastrous, owing chiefly to the hired auxiliaries of the Ammonites; and as it was necessary, as well as just, that they should be severely chastised for their wanton outrage on the Hebrew ambassadors, Joab ravaged their country and invested their capital, Rabbah. After a protracted siege, Joab took one part of it, the lower town or "city of waters," insulated by the winding course of the Jabbok. Knowing that the fort called "the royal city" would soon fall, he invited the king to come in person, and have the honor of storming it. The knowledge of this fact (mentioned in 2Sa 12:26) enables us to reconcile the two statements—"David tarried at Jerusalem" (1Ch 20:1), and "David and all the people returned to Jerusalem" (1Ch 20:3).