The extracts of the Acts of the Council of Ephesus are most edifying in this regard too.
http://www.newadvent.org/fathers/3810.htm Philip, presbyter and legate of the Apostolic See said: "We offer our thanks to the holy and venerable Synod, that when the writings of our holy and blessed pope had been read to you, the holy members by our [or your] holy voices, you joined yourselves to the holy head also by your holy acclamations. For your blessedness is not ignorant that the head of the whole faith, the head of the Apostles, is blessed Peter the Apostle. And since now our mediocrity, after having been tempest-tossed and much vexed, has arrived, we ask that ye give order that there be laid before us what things were done in this holy Synod before our arrival; in order that according to the opinion of our blessed pope and of this present holy assembly, we likewise may ratify their determination."
Philip the presbyter and legate of the Apostolic See said: "There is no doubt, and in fact it has been known in all ages, that the holy and most blessed Peter, prince (exarchos) and head of the Apostles, pillar of the faith, and foundation (themelios) of the Catholic Church, received the keys of the kingdom from our Lord Jesus Christ, the Saviour and Redeemer of the human race, and that to him was given the power of loosing and binding sins: who down even to today and forever both lives and judges in his successors. The holy and most blessed pope Celestine, according to due order, is his successor and holds his place, and us he sent to supply his place in this holy synod, which the most humane and Christian Emperors have commanded to assemble, bearing in mind and continually watching over the Catholic faith. For they both have kept and are now keeping intact the apostolic doctrine handed down to them from their most pious and humane grandfathers and fathers of holy memory down to the present time, etc."
excellent. TY, Hermann