Council of Nicaea (1st: 325); Councils and synods; Canons; Roman Empire; Theology; Christology; Christianity; Arius; Arians; Arianism; Origen; Orthodoxy; Heresy; Jesus Christ; Hypostatic union; Holy Roman Empire; Constantine I, Emperor of Rome, d....
Roman Empire; Byzantine Empire; Christianity; Emperors--Byzantine Empire; Diocletian, Emperor of Rome, 245-313; Eusebius, of Caesarea, Bishop of Caesarea, ca. 260- ca. 340; Heresy; Persecution; Arius; Arians; Arianism; Athanasius, Saint, Patriarch...