As far as I know, this is the first time you have associated Constantine’s tolerance and subsequent institution of Christianity as the state religion with ‘the coming of the Son of Man’ in judgement on Rome?

The reception of this development was mixed - especially when bishops who had apostasised during the Diocletian persecutions were accepted back into senior positions. This formed the essence of the Donatist dispute.

Rome dressed itself up in Christian clothing, but the pagan savagery of Rome was the wolf beneath the sheep’s clothing. Very apposite to Revelation, I would think.