“And after this it came to pass, that David smote the Philistines, and subdued them: and David took Methegammah out of the hand of the Philistines. Methegammah: or, the bridle of Ammah”
David subdues the Philistines, the Moabites, and the Syrians. (1-8) The spoil dedicated. (9-14) David's government and officers. (15-18)
“And he smote Moab, and measured them with a line, casting them down to the ground; even with two lines measured he to put to death, and with one full line to keep alive. And so the Moabites became David's servants, and brought gifts.”
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.
“When Toi king of Hamath heard that David had smitten all the host of Hadadezer,”
Verses 9-14 All the precious things David was master of, were dedicated things; they were designed for building the temple. ( 2 Samuel. 5:21 ) 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.
“And David reigned over all Israel; and David executed judgment and justice unto all his people.”
Verses 15-18 David neither did wrong, nor denied or delayed right to any. This speaks his close application to business; also his readiness to admit all addresses and appeals made to him. He had no respect of persons in judgment. Herein he was a type of Christ. To Him let us submit, his friendship let us seek, his service let us count our pleasure, diligently attending to the work he assigns to each of us. David made his sons chief rulers; but all believers, Christ's spiritual seed, are better preferred, for they are made kings and priests to our God, Re. 1:6 .