Christianity; Christology; Theology; Greek language; Philosophy; Platonism; Neoplatonism; Bible. O.T.; Nicene Creed; Arianism; Athanasius, Saint, Patriarch of Alexandria, d. 373.; Council of Chalcedon (451); Cyril, of Alexandria, Saint, ca. 370-444
Cities and towns; Christian converts; Byzantine Empire; Greek language; Coptic language; Copts; Persecution; Politics; Roman Empire; Arab Conquest of Egypt; Arabic language; Monasteries; Coptic Church; Muslim converts from Christianity;