81 After this David defeated the Philistines and subdued them, and David took Metheg-ammah out of the hand of the Philistines. 2 And he defeated Moab and he measured them with a line, making them lie down on the ground. Two lines he measured to be put to death, and one full line to be spared. And the Moabites became servants to David and brought tribute. 3 David also defeated Hadadezer the son of Rehob, king of Zobah, as he went to restore his power at the river Euphrates. 4 And David took from him 1,700 horsemen, and 20,000 foot soldiers. And David hamstrung all the chariot horses but left enough for 100 chariots. 5 And when the Syrians of Damascus came to help Hadadezer king of Zobah, David struck down 22,000 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 that were carried by the servants of Hadadezer and brought them to Jerusalem. 8 And from Betah and from Berothai, cities of Hadadezer, King David took very much bronze.
Matthew Henry's Commentary on 2 Samuel 8:1-8
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.