This is to anticipate an objection; for many might have said, "How can it be, that Babylon should thus fall, on whose monarchy so many and so wide countries are dependent?" As, then, such an event appearing so unreasonable, might occur to them, the Prophet meets the objection, and answers by way of anticipation, that though the earth shook, yet this would surely take place. He shows, at the same time, how great the calamity would be, for it would, by its noise, make the whole world to tremble: it would be thus better known how grievous was to be God's vengeance on the Babylonians; for it was not to be without the shaking of the whole earth. Now follows, --

At the noise of the taking of Babylon - See the note on the parallel place, Jeremiah 49:21 (note). In the forty-ninth chapter, these words are spoken of Nebuchadnezzar; here, of Cyrus. The taking of Babylon was a wonder to all the surrounding nations. It was thought to be impregnable.

At the noise of the taking of Babylon the earth is moved,.... It being so sudden and unexpected, and so very astonishing:
and the cry is heard among the nations; that Babylon is fallen; which, as applied to mystical Babylon, will be matter of joy to some, and of lamentation to others; see Revelation 14:8.

cry . . . among the nations--In Edom's case it is, "at the cry the noise thereof was heard in the Red Sea." The change implies the wider extent to which the crash of Babylon's downfall shall be heard.