Patriarchs and patriarchate; Saints; Athanasius, Saint, Patriarch of Alexandria, d. 373.; Alexandria (Egypt); Arianism; Paganism; Jews; Apollinarius, Bishop of Laodicea, d. ca. 390; Roman Empire; Orthodoxy; Theology
'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