Literally every Christian concept in the 2nc century and as later expressed in the Middle Ages, whether in West or East, are of “two different birds.”
Well… I think it’s great that you can admit to development. But the Deposit of Faith (if you’re Catholic)/Holy Tradition (if you’re Orthodox) can’t develop.
So this becomes a discussion about what can and what cannot develop and how we determine that.
Neither do you have the formulation of the Trinity.
Like here, for instance. The doctrine of the Trinity has
always been part of the Deposit/Tradition, as the theory goes. It just wasn’t dogmatically defined by Ecumenical Council for a few centuries.
Or the canon of the Bible.
Sure. Catholics defined their cannon in the affirmative at nearly the same time and didn’t close it in the negative until after the Protestant Reformation was underway - unsurprising for an apostolic religion (as opposed to one centered on personal revelation like our Evangelical friends typically prefer).
The point is, you can’t so simply call the Catholic view a “Middle Ages European” invention.
Oh I’m not nearly so vague.
Papal supremacy and the associated papal powers would be the referenced innovation.
Before Islam swallowed the other Patriarchal Sees, if the Roman bishop said “All must believe X!”, Alexandria and Constantinople were apparently happy to tell the Roman bishop to kick rocks if they felt the decree unreasonable.
Now, if the Roman bishop says “All must believe X!” (assuming he performed the necessary steps to make it a valid “Simon Says”), the only correct reply for Catholic bishops worldwide is “Yes, Your Holiness”.
I think we have to be a little more responsible with the data than that
Emphatically, genuinely - I could not agree more.
Again, see Maximus the Confessor. He comes a bit before Medieval Europe – and from the Byzantine East, too.
Sure. Augustine is also pre-Middle Ages and considered a western Christian - maybe the father of them.
At the end of his life, Augustine wrote his Retractations where he corrects statements in his earlier writings which he says were erroneous. One of these had to do with the interpretation of the rock in Matthew 16. At the beginning of his ministry Augustine had written that the rock was Peter. However, very early on he later changed his position and throughout the remainder of his ministry he adopted the view that the rock was not Peter but Christ or Peter’s confession which pointed to the person of Christ.
Being careful with the data, a present understanding of the papacy is extremely difficult to derive from ancient sources, which is why Catholic Theologians typically fall back to admitting to development at that point.
For ancient non-Catholics, some of that development that makes the modern papacy possible is heretical.