Constantinople I: canon I

The profession of faith of the holy fathers who gathered in Nicaea in Bithynia is not to be abrogated, but it is to remain in force. Every heresy is to be anathematised and in particular that of the Eunomians or Anomoeans, that of the Arians or Eudoxians, that of the Semi-Arians or Pneumatomachi, that of the Sabellians that of the Marcellians, that of the Photinians and that of the Apollinarians.