God had given David rest from all his enemies that opposed him and made head against him; and he having made a good use of that rest, has now commission given him to make war upon them, and to act offensively for the avenging of Israel's quarrels and the recovery of their rights; for as yet they were not in full possession of that country to which by the promise of God they were entitled.

I.He quite subdued the Philistines, Sa2 8:1. They had attacked him when they thought him weak (Sa2 5:17), and went by the worst then; but, when he found himself strong, he attacked them, and made himself master of their country. They had long been vexatious and oppressive to Israel. Saul got no ground against them; but David completed Israel's deliverance out of their hands, which Samson had begun long before, Jdg 13:5. Metheg-ammah was Gath (the chief and royal city of the Philistines) and the towns belonging to it, among which there was a constant garrison kept by the Philistines on the hill Ammah (Sa2 2:24), which was Metheg, a bridle (so it signifies) or curb upon the people of Israel; this David took out of their hand and used it as a curb upon them. Thus, when the strong man is disarmed, the armour wherein he trusted is taken from him, and used against him, Luk 11:22. And after the long and frequent struggles which the saints have had with the powers of darkness, like Israel with the Philistines, the Son of David shall tread them all under their feet and make the saints more than conquerors.

II.He smote the Moabites, and made them tributaries to Israel, Sa2 8:2. He divided the country into three parts, two of which he destroyed, casting down the strong-holds, and putting all to the sword; the third part he spared, to till the ground and be servants to Israel. Dr. Lightfoot says, "He laid them on the ground and measured them with a cord, who should be slain and who should live;" and this is called meting out the valley of Succoth, Psa 60:6. The Jews say he used this severity with the Moabites because they had slain his parents and brethren, whom he put under the protection of the king of Moab during his exile, Sa1 22:3, Sa1 22:4. He did it in justice, because they had been dangerous enemies to the Israel of God; and in policy, because, if left in their strength, they still would have been so. But observe, Though it was necessary that two-thirds should be cut off, yet the line that was to keep alive, though it was but one, is ordered to be a full line. Be sure to give that length enough; let the line of mercy be stretched to the utmost in favorem vitae - so as to favour life. Acts of indemnity must be construed so as to enlarge the favour. Now Balaam's prophecy was fulfilled, A sceptre shall arise out of Israel, and shall smite the corners of Moab, to the utmost of which the fatal line extended, Num 24:17. The Moabites continued tributaries to Israel till after the death of Ahab, Kg2 3:4, Kg2 3:5. Then they rebelled and were never reduced.

III.He smote the Syrians or Aramites. Of them there were two distinct kingdoms, as we find them spoken of in the title of the 60th Psalm: Aram Naharaim, - Syria of the rivers, whose head city was Damascus (famed for its rivers, Kg2 5:12), and Aram Zobah, which joined to it, but extended to Euphrates. These were the two northern crowns. 1. David began with the Syrians of Zobah, Sa2 8:3, Sa2 8:4. As he went to settle his border at the river Euphrates (for so far the land conveyed by the divine grant to Abraham and his seed did extend, Gen 15:18), the king of Zobah opposed him, being himself possessed of those countries which belonged to Israel; but David routed his forces, and took his chariots and horsemen. The horsemen are here said to be 700, but Ch1 18:4 they are said to be 7000. If they divided their horse by ten in a company, as it is probable they did, the captains and companies were 700, but the horsemen were 7000. David houghed the horses, cut the sinews of their hams, and so lamed them, and made them unserviceable, at least in war, God having forbidden them to multiply horses, Deu 17:16. David reserved only 100 chariots out of 1000 for his own use: for he placed his strength not in chariots nor horses, but in the living God (Psa 20:7), and wrote it from his own observation that a horse is a vain thing for safety, Psa 33:16, Psa 33:17. 2. The Syrians of Damascus coming in to the relief of the king of Zobah fell with him. 22,000 were slain in the field, Sa2 8:5. So that it was easy for David to make himself master of the country, and garrison it for himself, Sa2 8:6. The enemies of God's church, that think to secure themselves, will prove, in the end, to ruin themselves, by their confederacies with each other. Associate yourselves, and you shall be broken in pieces, Isa 8:9.

IV.In all these wars, 1. David was protected: The Lord preserved him whithersoever he went. It seems, he went in person, and, in the cause of God and Israel, jeoparded his own life in the high places of the field; but God covered his head in the day of battle, which he often speaks of, in his psalms, to the glory of God. 2. He was enriched. He took the shields of gold which the servants of Hadadezer had in their custody (Sa2 8:7) and much brass from several cities of Syria (Sa2 8:8), which he was entitled to, not only jure belli - by the uncontrollable right of the longest sword ("Get it, and take it"); but by commission from heaven, and the ancient entail of these countries on the seed of Abraham.

And measured them with a line - even with two lines - It has been generally conjectured that David, after he had conquered Moab, consigned two-thirds of the inhabitants to the sword; but I think the text will bear a meaning much more reputable to that king. The first clause of the verse seems to determine the sense; he measured them with a line, casting them down to the ground - to put to death, and with one line to keep alive. Death seems here to be referred to the cities by way of metaphor; and, from this view of the subject we may conclude that two-thirds of the cities, that is, the strong places of Moab, were erased; and not having strong places to trust to, the text adds, So the Moabites became David's servants, and brought gifts, i.e., were obliged to pay tribute. The word line may mean the same here as our rod, i.e., the instrument by which land is measured. There are various opinions on this verse, with which I shall not trouble the reader. Much may be seen in Calmet and Dodd.

And he smote Moab,.... He next went against that, and invaded it, the people of it being always troublesome and distressing to the children of Israel; and though the king of it had shown some favour to David, yet it was when he considered him as an enemy to Saul, and Saul to him; but things having taken a different turn, his and his people's enmity against David and his people appeared; wherefore he went and fought them, and made them his subjects, whereby was fulfilled the prophecy of Balaam, Num 24:17; as it referred to David:

and measured them with a line: either their country and fields, to distribute among his people, or rather the soldiers he took prisoners; which, as Procopius Gazaeus says, were so numerous that they could not be told, and therefore they were ordered to lie prostrate on the ground, and they were measured with a line, as it follows:

casting them down to the ground; or ordering them to lie down; though some understand this of casting down their cities, towers, and strong holds, and levelling them with the ground:

even with two lines measured he; with one, so it may be supplied, as the Vulgate Latin:

to put to death, and with one full line, to keep alive; that is, in measuring them with his lines, he divided them into two parts, one he put to death, and the other, the full line, which contained the most, he saved alive; though it seems according to our version, and so most understand it, that David slew two thirds, and saved one, and so Josephus (e). This must be understood of the army of the Moabites that fell into his hands, so Josephus, who persisted and refused to submit, not of all the inhabitants of the land. The Jews say (f), that the reason of this severe treatment of them was because they slew the father, and mother and brethren of David, whom he left to the care and custody of the king of Moab, when he fled from Saul, see Sa1 22:3; since after that they are heard no more of; though it should rather be imputed to their enmity against the people of Israel. The phrase of "meting out the valley of Succoth" seems to be an allusion to this fact, Psa 60:6, the psalm being written on occasion of the victories here related:

and so the Moabites became David's servants; the inhabitants of the land who were left in it, perhaps that part of the soldiers preserved alive were brought home captives:

and brought gifts; paid a yearly tribute to King David, as they afterwards did to Solomon and to Rehoboam, until the revolt of the ten tribes, and then they paid it unto the kings of Israel, to the times of Ahab, see Kg2 3:4, though these gifts may be distinct from, and besides the tribute paid, which is supposed in their being servants, see Ch2 17:11. Thus the Arabians (g) carried gifts to the king of Persia besides tribute.

(e) Antiqu. l. 7. c. 5. sect. 1. (f) Bemidbar Rabba, l. 14. fol. 212. 1. (g) Herodot. Thalia, sive, l. 3. c. 97.

he smote Moab, and measured them with a line--This refers to a well-known practice of Eastern kings, to command their prisoners of war, particularly those who, notorious for the atrocity of their crimes or distinguished by the indomitable spirit of their resistance, had greatly incensed the victors, to lie down on the ground. Then a certain portion of them, which was determined by lot, but most commonly by a measuring-line, were put to death. Our version makes him put two-thirds to death, and spare one-third. The Septuagint and Vulgate make one-half. This war usage was not, perhaps, usually practised by the people of God; but Jewish writers assert that the cause of this particular severity against this people was their having massacred David's parents and family, whom he had, during his exile, committed to the king of Moab.