Revelation 18:2

and he cried with a strong voice, Babylon the great is fallen, is fallen, and is become the abode of demons, the dungeon of every foul spirit, and a cage of every impure ill-boding bird.

Treasury of Scripture Knowledge

Summary

As a cage is full of birds, so are their houses full of deceit: therefore they are become great, and waxen rich.

Bible References

Cage

Revelation 18:2
and he cried with a strong voice, Babylon the great is fallen, is fallen, and is become the abode of demons, the dungeon of every foul spirit, and a cage of every impure ill-boding bird.