Sacraments; Fasting; Liturgies; Priests; Deacons; Council of Nicaea (1st: 325); Athanasius, Saint, Patriarch of Alexandria, d. 373.; Basil, the Great, saint, Bishop of Caesarea, ca. 329- 379; Patriarchs and patriarchate
Crusades; History; Council of Chalcedon (451); Christology; Dioscorus, Patriarch of Alexandria, d. 454; Islam; Jerusalem; Historians; History of the Patriarchs; Patriarchs and patriarchate; Ayyubid dynasty; Fatimid dynasty; Mamluks