Canon 4 Clerics who follow Nestorius or Celestius are deposed

Κανόνες τῆς ἐν Ἐφέσῳ Ἁγίας καὶ Οἰκουμενικῆς Γ´ Συνόδου

The Third Ecumenical Council · Ephesus, 431 · convened by the emperor Theodosius the Younger · Third Ecumenical Council: Ephesus (431) on the map

And if any of the clerics should fall away, and should dare, either privately or publicly, to hold the opinions of Nestorius or those of Celestius, it has been judged right by the holy synod that these too be deposed.

Εἰ δέ τινες ἀποστατήσαιεν τῶν κληρικῶν, καὶ τολμήσαιεν ἢ κατ᾿ ἰδίαν, ἢ δημοσίᾳ, τὰ Νεστορίου, ἢ τὰ Κελεστίου φρονῆσαι, καὶ τούτους εἶναι καθῃρημένους ὑπὸ τῆς ἁγίας συνόδου δεδικαίωται.

The Third Ecumenical Council, the canons

English: this site's translation of the Greek beside it. Greek: the text of the Pedalion, as transcribed at users.uoa.gr/~nektar and corrected here. About these texts.