Hey Jon, some questions I couldn’t answer:
JonNC …Things were taken to the whole Church - in council.
Regarding the following, why the need to even appeal to the bishop of Rome? Why didn’t they just settle the matter via ecumenical council? Why was it necessary, as per Flavian, for the whole sacred synod, to be obedient to the one bishop of Rome?
Eutyches (Byzantine monk) - argued against Jesus’ human nature which gave way to Monophysitism, and it spread throughout the eastern church, forcing Flavian (patriarch of Constantinople) - to call a local synod to condemn it and as history shows, Eutyches refused to submit to the synod, appealing his case to Pope Leo I. He wrote:
*“I take refuge, therefore, with you, the defender of religion and abhorrer of such factions. …I beseech you not to be prejudiced against me by their insidious designs about me, but to pronounce the sentence which shall seem to you right upon the Faith.”
*
Response to Eutyches:
"We exhort you, honorable brother, that you obediently listen to what has been written by the blessed Pope of the city of Rome, since blessed Peter, who lives and presides in his own see, offers the truth of faith to those who seek… Peter Chrysologus of Ravenna to Eutyches, Ep 25
Eutyches did not submit and the eastern emperor supported Eutyches’ stance. Eutyche then persuaded the emperor to call another council in Ephesus (“Robber Council”) - in which Rome was ignored and Monophysitism declared (unofficially) - to be the orthodox doctrine of the Church. At this same council several other eastern bishops, such as Theodoret of Cyrus and Eusebius of Doryleum were deposed from their sees for refusing to embrace Monophysitism and they too appealed to Leo, saying:
We hasten to your Apostolic See in order to receive from you a cure for the wounds of the Church. For every reason it is fitting for you to hold the first place, inasmuch as your see is adorned with many privileges. I have been condemned without trial. But I await the sentence of your Apostolic See. I beseech and implore Your Holiness to succor me in my appeal to your fair and righteous tribunal. Bid me hasten to you and prove to you that my teaching follows in the footsteps of the Apostles. – Theodoret to Pope Leo, Ep 113
Why not hasten to an ecumenical council, rather then the Apostolic See of Leo, in order to receive a cure for the wounds of the Church?
*The Apostolic throne has been wont from the beginning to defend those who are suffering injustice. I entreat Your Blessedness, give me back the dignity of my episcopate and communion with yourself, by letters from you to my lowliness bestowing on me my rank and communion. – Eusebius of Doryleum to Pope Leo
*
Why didn’t he appeal to an ecumenical council?
Flavian also appealed to Leo:
“When I began to appeal to the throne of the Apostolic See of Peter, the Prince of the Apostles, and to the whole sacred synod, which is obedient to Your Holiness, at once a crowd of soldiers surrounded me and barred my way when I wished to take refuge at the holy altar. …Therefore, I beseech Your Holiness not to permit these things to be treated with indifference…but to rise up first on behalf of the cause of our orthodox Faith, now destroyed by unlawful acts. …Further to issue an authoritative instruction…so that a like faith may everywhere be preached by the assembly of an united synod of fathers, both Eastern and Western. Thus the laws of the fathers may prevail and all that has been done amiss be rendered null and void. Bring healing to this ghastly wound.”
Why didn’t an ecumenical council rise up on behalf of the cause of the orthodox Faith to resolve the matter?
Eventually the Council of Chalcedon was convoked (comprised of basically all eastern bishops) - and Leo’s Tome against Monophysitism was read and embraced with the following pronouncement:
*“This is the faith of the fathers! This is the faith of the Apostles! So we all believe! thus the orthodox believe! Anathema to him who does not thus believe! Peter has spoken thus through Leo! . . . This is the true faith!’”
*
Why would it even matter what one bishop in Rome thought?

It ends with the council fathers recognizing Pope Leo as the successor of Peter and the Head of the Church, by saying, via letter:
*You are set as an interpreter to all of the voice of blessed Peter, and to all you impart the blessings of that Faith.
*
*"…Of whom you were Chief, as Head to the members, showing your good will." Chalcedon to Pope Leo (Repletum est Gaudio), November 451
*
K
nowing that every success of the children rebounds to the parents, we therefore beg you to honor our decision by your assent, and as we have yielded agreement to the Head in noble things, so may the Head also fulfill what is fitting for the children. – Chalcedon to Pope Leo, Ep 98
Why would they need Leo’s assent? He’s just one man, not a council.
Also we see the recognition that Peter, as per Matthew 16, is the rock on which Jesus’ church is built:
“Wherefore the most holy and blessed Leo, archbishop of the great and elder Rome, through us, and through this present most holy synod together with the thrice-blessed and all-glorious Peter the Apostle, who is the Rock and foundation of the Catholic Church, and the foundation of the orthodox faith, hath stripped him (Dioscorus, Bishop of Alexandria) of his episcopate, and hath alienated from him all hieratic worthiness.” Acts of Chalcedon
