So SS Peter and Paul came to Rome just because the weather was nice?
The reasons why they came to Rome is a different subject.
Ultimately,their movements were directed by God.
They certainly didn’t go to Rome in order to found an official state church there.
and of course the Church was legal and sponsered elsewhere.
and of course no other patriarchs were martyred.
The point I was making is that the idea that the Church of Rome’s authority was based upon Rome’s imperial authority is wrong. Since the Church of Rome was illegal and persecuted,it is wrong to suggest that its privileges were based upon imperial authority. The Church of Rome had authority over the whole Church from the beginning,the earliest evidence being the Letter of Clement to the Corinthians. The popes had universal jurisdiction The Fathers did not grant the Church of Rome its privileges because it was the royal city,as the Council of Chalcedon claimed,but because of the authority of Peter and Paul.
and the offiical decree making Catholicism the state Creed, which mentions the Pope of Rome (and Alexandria) by name, gave the Pope official status (and then there’s the title pontifax maximus).
If you try to pass counterfeit bills, they have to look like the real thing. So what do you make of the forgery the Donation of Constantine, and the idea of the Pope getting imperial honors when the main emperor left for New Rome?
The popes receiving imperial honors is one thing,and the idea of the papal authority being founded upon imperial authority is entirely another thing.
The source of the pope’s ecclesiastical authority is the man Peter,who was made the Head by Christ. The source of the Church of Rome’s ecclesiastical authority is Peter and Paul together,because that was their final destination and they were martyred there,consecrating Rome with their blood.