Revelation 17:5-9

5And on her forehead a name was written: MYSTERY, BABYLON THE GREAT, THE MOTHER OF HARLOTS AND OF THE ABOMINATIONS OF THE EARTH.

6I saw the woman, drunk with the blood of the saints and with the blood of the martyrs of Jesus. And when I saw her, I marveled with great amazement.

7But the angel said to me, “Why did you marvel? I will tell you the mystery of the woman and of the beast that carries her, which has the seven heads and the ten horns.

8The beast that you saw was, and is not, and will ascend out of the bottomless pit and go to perdition. And those who dwell on the earth will marvel, whose names are not written in the Book of Life from the foundation of the world, when they see the beast that was, and is not, and yet is.

9“Here is the mind which has wisdom: The seven heads are seven mountains on which the woman sits.