Arianism - Theological Debates

Theological Debates

The Council of Nicaea did not end the controversy, as many bishops of the Eastern provinces disputed the homoousios, the central term of the Nicene creed, as it had been used by Paul of Samosata, who had advocated a monarchianist Christology. Both the man and his teaching, including the term homoousios, had been condemned by the Synods of Antioch in 269.

Hence, after Constantine's death in 337, open dispute resumed again. Constantine's son Constantius II, who had become Emperor of the eastern part of the Empire, actually encouraged the Arians and set out to reverse the Nicene creed. His advisor in these affairs was Eusebius of Nicomedia, who had already at the Council of Nicea been the head of the Arian party, who also was made bishop of Constantinople.

Constantius used his power to exile bishops adhering to the Nicene creed, especially St Athanasius of Alexandria, who fled to Rome. In 355 Constantius became the sole Emperor and extended his pro-Arian policy toward the western provinces, frequently using force to push through his creed, even exiling Pope Liberius and installing Antipope Felix II.

As debates raged in an attempt to come up with a new formula, three camps evolved among the opponents of the Nicene creed. The first group mainly opposed the Nicene terminology and preferred the term homoiousios (alike in substance) to the Nicene homoousios, while they rejected Arius and his teaching and accepted the equality and coeternality of the persons of the Trinity. Because of this centrist position, and despite their rejection of Arius, they were called "semi-Arians" by their opponents. The second group also avoided invoking the name of Arius, but in large part followed Arius' teachings and, in another attempted compromise wording, described the Son as being like (homoios) the Father. A third group explicitly called upon Arius and described the Son as unlike (anhomoios) the Father. Constantius wavered in his support between the first and the second party, while harshly persecuting the third.

The debates among these groups resulted in numerous synods, among them the Council of Sardica in 343, the Council of Sirmium in 358 and the double Council of Rimini and Seleucia in 359, and no fewer than fourteen further creed formulas between 340 and 360, leading the pagan observer Ammianus Marcellinus to comment sarcastically: "The highways were covered with galloping bishops." None of these attempts were acceptable to the defenders of Nicene orthodoxy: writing about the latter councils, Saint Jerome remarked that the world "awoke with a groan to find itself Arian."

After Constantius' death in 361, his successor Julian the Apostate, a devotee of Rome's pagan gods, declared that he would no longer attempt to favor one church faction over another, and allowed all exiled bishops to return; this resulted in further increasing dissension among Christians. The Emperor Valens, however, revived Constantius' policy and supported the "Homoian" party, exiling bishops and often using force. During this persecution many bishops were exiled to the other ends of the Empire, (e.g., St Hilary of Poitiers to the Eastern provinces). These contacts and the common plight subsequently led to a rapprochement between the Western supporters of the Nicene creed and the homoousios and the Eastern semi-Arians.