John Dummelow's Commentary on the Bible - 1 Chronicles 20:1-8
The Siege of Rabbah. The Slaughter of three Philistine GiantsThis chapter corresponds, with some unimportant differences, to several distinct sections in 2 S, viz. 2 Samuel 11:1; 2 Samuel 12:26-31; 2 Samuel 21:18-22.2. David took, etc.] This implies David’s presence at Rabbah, and as it stands here is inconsistent with the previous verse. In 2 Samuel 12 the discrepancy is explained by a passage which Chronicles omits, relating that Joab summoned David to Rabbah and that the king went thither.5.... read more
Commentary Critical and Explanatory on the Whole Bible - 1 Chronicles 20:1
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... read more