Here we have, I. The preparation which the Ammonites made for war, Sa2 10:6. They saw they had made themselves very odious to David and obnoxious to his just displeasure. This they might easily have foreseen when they abused his ambassadors, which was no other than a challenge to war, and a bold defiance of him. Yet, it seems, they had not considered how unable they were, with their thousands, to meet his; for now they found themselves an unequal match, and were forced to hire forces of other nations into their service. Thus sinners daringly provoke God, and expose themselves to his wrath, and never consider that he is stronger than they, Co1 10:22. The Ammonites gave the affront first, and they were the first that raised forces to justify it. Had they humbled themselves, and begged David's pardon, probably an honorary satisfaction might have atoned for the offence. But, when they were thus desperately resolved to stand by what they had done, they courted their own ruin.

II.The speedy descent which David's forces made upon them, Sa2 10:7. When David heard of their military preparations, he sent Joab with a great army to attack them, Sa2 10:7. Those that are at war with the Son of David not only give the provocation, but begin the war; for he waits to be gracious, but they strengthen themselves against him, and therefore, if they turn not, he will whet his sword, Psa 7:12. God has forces to send against those that set his wrath at defiance (Isa 5:19), which will convince them, when it is too late, that none ever hardened his heart against God and prospered. It was David's prudence to carry the war into their country, and fight them at the entering in of the gate of their capital city, Rabbah, as some think, or Medeba, a city in their borders, before which they pitched to guard their coast, Ch1 19:7. Such are the terrors and desolations of war that every good prince will, in love to his people, keep it as much as may be at a distance from them.

III.Preparations made on both sides for an engagement. 1. The enemy disposed themselves into two bodies, one of Ammonites, which, being their own, were posted at the gate of the city; the other of Syrians, whom they had taken into their pay, and who were therefore posted at a distance in the field, to charge the forces of Israel in the flank or rear, while the Ammonites charged them in the front, Sa2 10:8. 2. Joab, like a wise general, was soon aware of the design, and accordingly divided his forces: the choicest men he took under his own command, to fight the Syrians, whom probably he knew to be the better soldiers, and, being hired men, better versed in the arts of war, Sa2 10:9. The rest of the forces he put under the command of Abishai his brother, to engage the Ammonites, Sa2 10:10. It should seem, Joab found the enemy so well prepared to receive them that his conduct and courage were never so tried as now.

IV.Joab's speech before the battle, Sa2 10:11, Sa2 10:12. It is not long, but pertinent, and brave. 1. He prudently concerts the matter with Abishai his brother, that the dividing of the forces might not be the weakening of them, but that, which part soever was borne hard upon, the other should come in to its assistance. He supposes the worst, that one of them should be obliged to give back; and in that case, upon a signal given, the other should send a detachment to relieve it. Note, Mutual helpfulness is brotherly duty. If occasion be, thou shalt help me, and I will help thee. Christ's soldiers should thus strengthen one another's hands in their spiritual warfare. The strong must succour and help the weak. Those that through grace are conquerors over temptation must counsel, and comfort, and pray for, those that are tempted. When thou art converted, strengthen thy brethren, Luk 22:32. The members of the natural body help one another, Co1 12:21. 2. He bravely encourages himself, and his brother, and the rest of the officers and soldiers, to do their utmost. Great dangers put an edge upon true courage. When Joab saw the front of the battle was against him, both before and behind, instead of giving orders to make an honourable retreat, he animated his men to charge so much more furiously: Be of good courage and let us play the men, not for pay and preferment, for honour and fame, but for our people, and for the cities of our God, for the public safety and welfare, in which the glory of God is so much interested. God and our country was the word. "Let us be valiant, from a principle of love to Israel, that are our people, descended from the same stock, for whom we are employed, and in whose peace we shall have peace; and from a principle of love to God, for they are his cities that we are fighting in the defence of." The relation which any person or thing stands in to God should endear it to us, and engage us to do our utmost in its service. 3. He piously leaves the issue with God: "When we have done our part, according to the duty of our place, let the Lord do that which seemeth to him good." Let nothing be wanting in us, whatever the success be; let God's work be done by us, and then God's will be done concerning us. When we make conscience of doing our duty we may, with the greatest satisfaction, leave the event with God, not thinking that our valour binds him to prosper us, but that still he may do as he pleases, yet hoping for his salvation in his own way and time.

V.The victory Joab obtained over the confederate forces of Syria and Ammon, Sa2 10:13, Sa2 10:14. He provided for the worst, and put the case that the Syrians and Ammonites might prove too strong for him (Sa2 10:11), but he proved too strong for them both. We do not hinder our success by preparing for disappointment. The Syrians were first routed by Joab, and then the Ammonites by Abishai; the Ammonites seem not to have fought at all, but, upon the retreat of the Syrians, to have fled into the city. It is a temptation to soldiers to fly when they have a city at their backs to fly to. It is one thing when men may either fight or fly and another thing when they must either fight or die.

Be of good courage - This is a very fine military address, and is equal to any thing in ancient or modern times. Ye fight pro aris et focis; for every good, sacred and civil; for God, for your families, and for your country.

Be of good courage, and let us play the men,.... This Joab said, not only to encourage Abishai and himself, but in the hearing of the rest of the officers of the army, and of many of the people, to hearten them to the battle; who might be somewhat intimidated with the number of their enemies, and the position they were in, being before and behind them; and therefore he thought proper to make such a speech to them to animate them to light:

for our people, and for the cities of our God; that the people of Israel might not be carried captive, and their cities spoiled and plundered; and instead of being cities where the people of God dwelt, and he was worshipped, would, if taken, become the habitations of idolatrous Heathens, and where temples would be erected to idols, and the worship of them; these were the arguments he used to engage them to fight manfully for their country, the liberties and religion of it:

and the Lord do that which seemeth him good: tacitly suggesting that victory was of the Lord, and that it became them to do their part in fighting courageously, and leave the issue to the Lord, on whom alone success depended.

THE AMMONITES OVERCOME. (Sa2 10:6-14)

when the children of Ammon saw that they stank before David--To chastise those insolent and inhospitable Ammonites, who had violated the common law of nations, David sent a large army under the command of Joab, while they, informed of the impending attack, made energetic preparations to repel it by engaging the services of an immense number of Syrian mercenaries.

Beth-rehob--the capital of the low-lying region between Lebanon and Anti-Lebanon.

Zoba--(see on Sa2 8:3).

of king Maacah--His territories lay on the other side of Jordan, near Gilead (Deu 3:14).

Ish-tob--that is, "the men of Tob"--the place of Jephthah's marauding adventures (see also Ch1 19:6; Psa 60:1, title). As the Israelite soldiers poured into the Ammonite territory, that people met them at the frontier town of Medeba (Ch1 19:7-9), the native troops covering the city, while the Syrian mercenaries lay at some distance encamped in the fields. In making the attack, Joab divided his forces into two separate detachments--the one of which, under the command of his brother, Abishai, was to concentrate its attack upon the city, while he himself marched against the overwhelming host of mercenary auxiliaries. It was a just and necessary war that had been forced on Israel, and they could hope for the blessing of God upon their arms. With great judgment the battle opened against the mercenaries, who could not stand against the furious onset of Joab, and not feeling the cause their own, consulted their safety by flight. The Ammonites, who had placed their chief dependence upon a foreign aid, then retreated to entrench themselves within the walls of the town.