In a similar way Isaiah also speaks of the devil, whom he portrays in the image of the king of Babylon: “How you have fallen from heaven, O daystar, son of the dawn” (Isa 14:12).
The Holy Spirit considers the body of all the lost, which He calls by different names according to the occasion. He judges that this body, long grown together with many deformities, has reached its limit here.
Destroyed by sins and ensnared by errors, it has gone mad to such a degree of impiety that its members resisted the meek.
In a fitting description, the Holy Spirit presents what is subject to destruction, calling it a harlot. For after being forsaken by the Creator, it gave itself to fornication so as to be violated by demons.
She is “great” because of the monstrous perversities with which she greatly mocked the saints. She sits “on many waters,” that is, on many nations.