On St Maximos and the Pope of Rome

Hans asked: In need of assistance. St. Maximus seems to have said that the Church of Rome could never fall (see quote below.) How to best argue against those using this as a proof for papal supremacy? I contrasted it with St. Maximus’ statement that even if Rome did, he would not commemorate the EP, which imo implies that yes, Rome could become heretical.

quote: The extremities of the earth, and everyone in every part of it who purely and rightly confess the Lord, look directly towards the Most Holy Roman Church and her confession and faith, as to a sun of unfailing light awaiting from her the brilliant radiance of the sacred dogmas of our Fathers, according to that which the inspired and holy Councils have stainlessly and piously decreed. For, from the descent of the Incarnate Word amongst us, all the churches in every part of the world have held the greatest Church alone to be their base and foundation, seeing that, according to the promise of Christ Our Savior, the gates of hell will never prevail against her, that she has the keys of the orthodox confession and right faith in Him, that she opens the true and exclusive religion to such men as approach with piety, and she shuts up and locks every heretical mouth which speaks against the Most High. (Maximus, Opuscula theologica et polemica, Migne, Patr. Graec. vol. 90)

Answer: The quote is common and inconsistent with his life, when Monothelites attempted to imply that Rome would agree to their heresy. St Maximos responded that he would then commemorate no one. From the Life:

The Saint said, “They [the Patriarchs of Constantinople and Alexandria and all the other heretical bishops of the East] have been deposed and deprived of the priesthood at the local synod which took place recently in Rome. What Mysteries, then, can they perform? Or what spirit will descend upon those who are ordained by them?”

“Then you alone will be saved, and all others will perish?” they objected.

To this the Saint replied, “When all the people in Babylon were worshipping the golden idol, the Three Holy Children did not condemn anyone to perdition. They did not concern themselves with the doings of others, but took care only for themselves, lest they should fall away from true piety. In precisely the same way, when Daniel was cast into the lion’s den, he did not condemn any of those who, fulfilling the law of Darius, did not wish to pray to God, but he kept in mind his own duty, and desired rather to die than to sin against his conscience by transgressing the Law of God. God forbid that I should condemn anyone or say that I alone am being saved! However, I shall sooner agree to die than to apostatize in any way from the true Faith and thereby suffer torments of conscience.”

“But what will you do,” inquired the envoys, “when the Romans are united to the Byzantines? Yesterday, indeed, two delegates arrived from Rome and tomorrow, the Lord’s day, they will communicate the Holy Mysteries with the Patriarch. “

The Saint replied, “Even if the whole universe holds communion with the Patriarch, I will not communicate with him. For I know from the writings of the holy Apostle Paul: the Holy Spirit declares that even the angels would be anathema if they should begin to preach another Gospel, introducing some new teaching.”