On the Letter Letter to the Synod of Ephesus
Editor's note
When the Third Ecumenical Council met at Ephesus in 431, Pope Celestine did not come himself but sent two bishops and a presbyter with this letter. It was read to the council in its second session, in a Greek translation, and the bishops answered with acclamations: To Celestine, a new Paul! To Cyril, a new Paul! One faith of the Synod! One faith of the world! The letter asks the Fathers to keep the faith received from the Apostles, at the place where St Paul had charged the elders of Ephesus to guard the flock.
Summary by PurifyWritten by Purify, not St. Celestine of Rome's words.
The letter is given verbatim below in the public-domain English of NPNF Series II Vol. 14. The paragraph breaks are ours.
Cœlestine the bishop to the holy Synod assembled at Ephesus
The next chapter opens when you reach the end.