Theology; Sacraments; Eucharist; Coptic Church; Protestantism; Christology; Clement, of Alexandria, Saint, ca. 150-ca. 215; John Chrysostom, Saint, d. 407; Cyril, of Alexandria, Saint, ca. 370-444; Athanasius, Saint, Patriarch of Alexandria, d. 373.
Theology; Christology; Nestorians; Nestorius, Patriarch of Constantinople, fl. 428; Council of Ephesus (431); Cyril, of Alexandria, Saint, ca. 370-444; Council of Chalcedon (451); Eutyches, ca. 375-ca. 454; Dioscorus, Patriarch of Alexandria, d. 454