VI. An ample commission given them to destroy and lay all waste. Let them bend their bow against the archers of the Chaldeans (v. 3) and not spare her young men, but utterly destroy them, for the Lord has both devised and done what he spoke against Babylon, v. 12. This may animate the instruments he employs, but assuring them of success. The methods they take are such as God has devised and therefore they shall surely prosper; what he has spoken shall be done, for he himself will do it; and therefore let all necessary preparations be made. This they are called to, v. 27, 28. Let a standard be set up, under which to enlist soldiers for this expedition; let a trumpet be blown to call men together to it and animate them in it; let the nations, out of which Cyrus's army is to be raised, prepare their recruits; let the kingdoms of Ararat, and Minni, and Ashkenaz, of Armenia, both the higher and the lower, and of Ascania, about Phrygia and Bithynia, send in their quota of men for his service; let general officers be appointed and the cavalry advance; let the horses come up in great numbers, as the caterpillars, and come, like them, leaping and pawing in the valley; let them lay the country waste, as caterpillars do (Joel i. 4), especially rough caterpillars; let the kings and captains prepare nations against Babylon, for the service is great and there is occasion for many hands to be employed it.