Revelation 14:8

And another second angel followed, saying, Fallen, fallen is Babylon the great, who has made all the nation to drink of the wine of the wrath of her fornication.

Revelation 18:2

And he cried with a strong voice, saying, Fallen, fallen is Babylon the great, and has become the habitation of demons, and the hold of every unclean spirit, and the den of every unclean and hateful bird;

Revelation 18:21

And one strong angel lifted up a stone like a great millstone, and cast it into the sea, saying, Thus with a mighty fall shall Babylon the great city, be cast down, and can be found no more.

Treasury of Scripture Knowledge

Summary

And thou shalt say, Thus shall Babylon sink, and shall not rise from the evil that I will bring upon her: and they shall be weary. Thus far are the words of Jeremiah.

Bible References

Thus shall

Revelation 14:8
And another second angel followed, saying, Fallen, fallen is Babylon the great, who has made all the nation to drink of the wine of the wrath of her fornication.
Revelation 18:2
And he cried with a strong voice, saying, Fallen, fallen is Babylon the great, and has become the habitation of demons, and the hold of every unclean spirit, and the den of every unclean and hateful bird;