Apocalipse 17

Apocalipse 17:5

Nor does he want to openly say that the Roman empire must be destroyed, which those who rule it regard as eternal. Therefore, according to the Apocalypse of John, on the forehead of the purple-clad prostitute, the name of blasphemy is written, that is, the eternal Rome. For if he had openly and boldly said that the Antichrist would not come unless the Roman empire was first destroyed, it would have seemed like a just cause for persecution to then arise against the Church in the east. — Letter 121, Chapter 11