Status Updates From The Paradiso (Signet Classics)

I'm bit past it now but it's wild that in one of the Mercury cantos Dante argues the Roman empire had proper jurisdiction to put Christ to death, so to this day the empire should rule everyone. ...but in the next canto he argues that it was right for Jerusalem to be destroyed for putting Christ to death. so both of them teamed up to kill God but Rome gets rewarded and the Jews destroyed for it?

Progreso: Canto IV