Revelation 17:1-5

AND one of the seven angels having the seven bowls came and spoke to me, saying, Come, I will show you the judgment of the great harlot who sits on many waters,

Revelation 18:2-3

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 18:9

And the kings of the earth who committed fornication and lived luxuriously with her shall weep and lament for her, when they see the smoke of her burning,

Revelation 18:23

and the light of a candle shall shine in you no more, and the voice of a bridegroom and of a bride shall be heard in you no more, for your merchants were the great ones of the earth, for all nations were deceived by your magic arts,

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
AND one of the seven angels having the seven bowls came and spoke to me, saying, Come, I will show you the judgment of the great harlot who sits on many waters,
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,