Therefore prophesy thou, etc. Babylon, like the smaller kingdoms which it absorbed, has fallen, and nothing remains (for nothing had been revealed to the prophet concerning an interval to elapse previously) but to picture the great assize from which no flesh should be exempt.
As the lion suddenly bursts, roaring, from his lair, so Jehovah, no longer the "good Shepherd," shall roar from on high (comp. Amos 1:2; Joel 3:16) even upon his habitation, or rather, against his pasture, where his flock (Jeremiah 23:1) has been feeding so securely.
He shall give a shout. It is the technical term used at once for the vintage-shout and for the battle-cry. In Isaiah 16:9, Isaiah 16:10, there is a beautiful allusion to this double meaning, and so perhaps there is here (comp.