Revelation 17:3-5

17:3 So he carried me away in the Spirit to a wilderness, and there I saw a woman sitting on a scarlet beast that was full of blasphemous names and had seven heads and ten horns. 17:4 Now the woman was dressed in purple and scarlet clothing, and adorned with gold, precious stones, and pearls. She held in her hand a golden cup filled with detestable things and unclean things from her sexual immorality. 17:5 On her forehead was written a name, a mystery: “Babylon the Great, the Mother of prostitutes and of the detestable things of the earth.”

Revelation 17:18

17:18 As for the woman you saw, she is the great city that has sovereignty over the kings of the earth.”