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.

9 When Toi king of Hamath heard that David had defeated the whole army of Hadadezer, 10 Toi sent his son Joram to King David, to ask about his health and to bless him because he had fought against Hadadezer and defeated him, for Hadadezer had often been at war with Toi. And Joram brought with him articles of silver, of gold, and of bronze. 11 These also King David dedicated to the Lord, together with the silver and gold that he dedicated from all the nations he subdued, 12 from Edom, Moab, the Ammonites, the Philistines, Amalek, and from the spoil of Hadadezer the son of Rehob, king of Zobah.

Matthew Henry's Commentary on 2 Samuel 8:3-12

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.

Commentary on 2 Samuel 8:9-14

(Read 2 Samuel 8:9-14)

All the precious things David was master of, were dedicated things; they were designed for building the temple. The idols of gold David destroyed, 2 Samuel 5:21, but the vessels of gold he dedicated. Thus, in the conquest of a soul by the grace of the Son of David, what stands in opposition to God must be destroyed, every lust must be mortified and crucified, but what may glorify him must be dedicated; thus the property of it is altered. God employs his servants in various ways; some, as David, in spiritual battles; others, as Solomon, in spiritual buildings; and one prepares work for the other, that God may have the glory of all.