'Amr ibn al-'As; Arab Conquest of Egypt; Arabs; Asceticism; Alexandria; Cairo (Egypt); Byzantine Empire; Coptic Church; Heraclius, Emperor of the East, ca. 575-641; History; Chalcedonian Church; Melchite Church; Orthodoxy
Bishops; Nestorius, Patriarch of Constantinople, fl. 428; Nestorians; Cyril, of Alexandria, Saint, ca. 370-444; Council of Ephesus (431); Latin language; Greek language; Letters; Manuscripts; Coptic language; Rome (Italy)