II. The instruments of it: Spoilers shall come (v. 8), shall come with a sword, a sword that shall pursue them, v. 2. "I will send unto him wanderers, such as come from afar, as if they were vagrants, or had missed their way, but they shall cause him to wander; they seem as wanderers themselves, but they shall make the Moabites to be really wanderers, some to flee and others to be carried into captivity." These destroyers stir up themselves to do execution; they have devised evil against Heshbon, one of the principal cities of Moab, and they aim at no less than the ruin of the kingdom: Come, and let us cut it off from being a nation (v. 2); nothing less will serve the turn of the invaders; they come, not to plunder it, but to ruin it. The prophet, in God's name, engages them to make thorough work of it (v. 10): Cursed be he that does the work of the Lord deceitfully, this bloody work, this destroying work; though it goes against the grain with men of compassion, yet it is the work of the Lord, and must not be done by the halves. The Chaldeans have it in charge, by a secret instinct (says Mr. Gataker), to destroy the Moabites, and therefore they must not spare, must not, out of foolish pity, keep back their sword from blood; they would thereby bring a sword, and a curse with it, upon themselves, as Saul did by sparing the Amalekites and Ahab by letting Benhadad go. Thy life shall go for his life. To this work is applied that general rule given to all that are employed in any service for God, Cursed by he that does the work of the Lord deceitfully or negligently, that pretends to do it, but does it not to purpose, makes a show of serving God's glory, but is really serving his own ends and carries on the work of the Lord no further than will suit his own purposes, or that is slothful in business for God and takes neither care nor pains to do it as it should be done, Mal. i. 14. Let not such deceive themselves, for God will not thus be mocked.