Revelation 17:1-5

Then came one of the seven angels with the seven plagues and spoke to me, saying, "Come and I will show you the doom of the great Harlot who is seated on many waters,

Revelation 18:2-3

and he shouted aloud with a strong voice, "Fallen, fallen is Babylon the great, now she is a haunt of demons, the den of all foul spirits, a cage for every foul and loathsome bird:

Revelation 18:9

And the kings at the earth who committed vice and wantoned with her shall weep and wail over her, as they watch the smoke of her burning;

Revelation 18:23

For the magnates of earth were thy traders; all nations were seduced by thy magic spells.

Treasury of Scripture Knowledge

Summary

Because of the multitude of the whoredoms of the wellfavoured harlot, the mistress of witchcrafts, that selleth nations through her whoredoms, and families through her witchcrafts.

Bible References

The mistress

Revelation 17:1
Then came one of the seven angels with the seven plagues and spoke to me, saying, "Come and I will show you the doom of the great Harlot who is seated on many waters,
Revelation 18:2
and he shouted aloud with a strong voice, "Fallen, fallen is Babylon the great, now she is a haunt of demons, the den of all foul spirits, a cage for every foul and loathsome bird: