3 David also defeated Hadade'zer the son of Rehob, king of Zobah, as he went to restore his power at the river Euphra'tes. 4 And David took from him a thousand and seven hundred horsemen, and twenty thousand foot soldiers; and David hamstrung all the chariot horses, but left enough for a hundred chariots. 5 And when the Syrians of Damascus came to help Hadade'zer king of Zobah, David slew twenty-two thousand men of the Syrians. 6 Then David put garrisons in Aram of Damascus; and the Syrians became servants to David and brought tribute. And the Lord gave victory to David wherever he went. 7 And David took the shields of gold which were carried by the servants of Hadade'zer, and brought them to Jerusalem. 8 And from Betah and from Bero'thai, cities of Hadade'zer, King David took very much bronze.
Matthew Henry's Commentary on 2 Samuel 8:3-8
Commentary on 2 Samuel 8:1-8.
(Read 2 Samuel 8:1-8.)
David subdued the Philistines. They had long been troublesome to Israel. And after the long and frequent struggles the saints have with the powers of darkness, like Israel with the Philistines, the Son of David shall tread them all under foot, and make the saints more than conquerors. He smote the Moabites, and made them tributaries to Israel. Two parts he destroyed, the third part he spared. The line that was to keep alive, though it was but one, is ordered to be a full line. Let the line of mercy be stretched to the utmost. He smote the Syrians. In all these wars David was protected, for this in his psalms he often gives glory to God.