Revelation 17:8-10

New Revised Standard Version Catholic Edition

⁸ The beast that you saw was, and is not, and is about to ascend from the bottomless pit and go to destruction. 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 amazed when they see the beast, because it was and is not and is to come.

⁹ “This calls for a mind that has wisdom: the seven heads are seven mountains on which the woman is seated; also, they are seven kings, ¹⁰ of whom five have fallen, one is living, and the other has not yet come; and when he comes, he must remain only a little while.