Revelation 14:8

And another, a second angel, followed, saying, Babylon the great has fallen, who made all nations drink of the wine of the wrath of her fornication.

Revelation 18:2

And he cried with a loud voice, saving, Babylon the great has fallen, has fallen, and has become a habitation of demons, and a haunt of every impure spirit, and a haunt of every impure and hateful bird,

Revelation 18:8-11

Therefore in one day shall her plagues come, death and sorrow and famine, and she shall be burnt with fire; for mighty is the Lord God who has judged her.

Revelation 18:17-19

for in one hour are so great riches made a desolation. And every sailing-master and every one who sails to the place, and sailors and all that work on the sea, shall stand afar off,

Treasury of Scripture Knowledge

Summary

Babylon is suddenly fallen and destroyed: howl for her; take balm for her pain, if so be she may be healed.

Bible References

Suddenly

Revelation 14:8
And another, a second angel, followed, saying, Babylon the great has fallen, who made all nations drink of the wine of the wrath of her fornication.
Revelation 18:2
And he cried with a loud voice, saving, Babylon the great has fallen, has fallen, and has become a habitation of demons, and a haunt of every impure spirit, and a haunt of every impure and hateful bird,