Revelation 17:7-11

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

8“The beast that you saw was [once], but [now] is not, and he is about to come up out of the abyss (the bottomless pit, the dwelling place of demons) and go to destruction (perdition). And the inhabitants of the earth, whose names have not been written in the Book of Life from the foundation of the world, will be astonished when they see the beast, because he was and is not and is yet to come [to earth].

9Here is the mind which has wisdom [and this is what it knows about the vision]. The seven heads are seven hills on which the woman sits;

10and they are seven kings: five of whom have fallen, one exists and is reigning; the other [the seventh] has not yet come, and when he does come, he must remain a little while.

11And the beast that [once] was but is not, is himself also an eighth king and is one of the seven, and he goes to destruction (perdition).