The first, truly catholic (“universal”) church was the Church which Jesus founded, which grew and developed across the Mediterranean world and eastward into Asia. When founded, it was not Roman, but Jewish/Hellenic.
For some clarifications,
The “Roman” qualifier for the Catholic Church is explained here
Roman Catholic & here taking a Q/A format
radioreplies.info/radio-replies-vol-4.php?t=21
BTW, The official name of the Church is the Catholic Church. No qualifiers
Over time, disagreements split the church. The Roman Catholic Church today, Sancta Catholica Apostolica Romana Ecclesia, is the largest of the descendants of that original and claims to be the one true descendant; however, the Orthodox claim the same thing, as do various (but not all) Protestant groups.
All Protestants regardless of stripe fall into
The Great Heresies each heresy coming in their own time. Protestant roots go no farther back than the protestant revolt in the 16th century. Hence Cardinal Newman’s famous quote, “to be deep in history is to cease being Protestant”
The Church has been the Catholic Church from the beginning.
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BTW, I’ve asked this question over the years. Haven’t gotten an answer… yet. Maybe you have one.
When is the first time we see “Orthodox Church” in writing?
Please give references properly referenced
As a general observation I would think the answer has to be well AFTER the council of Nicea, because the Nicene creed makes it an article of faith that one is to believe in One Holy Catholic Apostolic Church.
The Orthodox are seperated from the chair of Peter as well, thus they are in schism. An act of schism, like heresy as well, are condemned in scripture. And that condemnation has no expiration date.
BTW, Ignatius of Antioch, in his letter to the Church of Rome, wrote that the Church of Rome holds the presidency. To no other Church did he acknowledge that, not even his own. So given Ignatius was Bishop from ~69 a.d. to ~107 a.d. and a direct disciple of St John, I think it’s clear where he received that understanding.
M:
So, on the one hand, the Roman Catholic Church is not identical to the original from which it developed but its apologists believe that it is the only one which developed correctly, i.e. they effectively disqualify the others.
All who are united to the see of Peter, the pope of Rome, are in unity with Jesus and what Jesus established. Once a person is NOT in union with the see of Peter, and knows they need to be and refuse to unite with him, then as Paul says, (inspired by the Holy Spirit, which in effect comes from Jesus) warns that heaven will not be in that person’s future.
M:
An Irish Catholic is a Roman Catholic, but not all Roman Catholics are Irish Catholics.
An Irish Catholic is a Catholic. Re: different “rites” in the Catholic Church, they are still Catholic. If an Irish person is Anglican for example, they are Protestant
Just wanted to make a few clarifications