I. The commission and charge given to the instruments that were to be employed in destroying Babylon. The army that is to do it is called an assembly of great nations (v. 9), the Medes and Persians, and all their allies and auxiliaries; it is called an assembly, because regularly formed by the divine will and counsel to do this execution. God will raise them up to do it, will incline them to and fit them for this service, and then he will cause them to come up, for all their motions are under his conduct and direction: he shall give the word of command, shall order them to put themselves in array against Babylon (v. 14), and then they shall put themselves in array (v. 9), for what God appoints to be done shall be done; and thence she shall be quickly taken; from their first sitting down before it they shall be still gaining ground against it till it be taken. God shall bid them shoot at her and spare no arrows (v. 14), and then their arrows shall be as of a mighty expert man, that has both skill and strength, a good eye and a good hand (v. 9); none shall return in vain. When God gives commission he will give success. Nay, they are bidden not only to shoot at her (v. 14), but to shout against her (v. 15) with a triumphant shout, as those that are already sure of victory. Those whom God directs to shoot may do so with shouting, for they are sure not to miss the mark.