Arian controversy

The Arian controversy was a series of Christian disputes about the nature of Christ that began with a dispute between Arius and Athanasius of Alexandria, two Christian theologians from Alexandria, Egypt. The most important of these controversies concerned the relationship between the substance of God the Father and the substance of His Son.

Emperor Constantine, through the Council of Nicaea in 325, attempted to unite Christianity and establish a single, imperially approved version of the faith. Ironically, his efforts were the cause of the deep divisions created by the disputes after Nicaea.^[1]^[2]

These disagreements divided the Church into various factions for over 55 years, from the time of the First Council of Nicaea in 325 until the First Council of Constantinople in 381. There was no formal schism.

Inside the Roman Empire, the Trinitarian faction ultimately gained the upper hand through the Edict of Thessalonica, issued on 27 February AD 380 by the then reigning three co-Emperors, which made Nicene Christology the state religion of the Roman Empire,^[3] and through strict enforcement of that edict. However, outside the Roman Empire, Arianism and other forms of Unitarianism continued to be preached for some time. The modern Roman Catholic Church and the Eastern Orthodox Church, as well as most other modern Christian sects, have generally followed the Trinitarian formulation, though each has its own specific theology on the matter.^[4]^[5]

^ Papandrea, James Leonard (2012). Reading the Early Church Fathers: From the Didache to Nicaea. p. 177. ISBN 978-0-8091-4751-9.
^ Smither, Edward L., ed. (2014-02-14). Rethinking Constantine: History, Theology, and Legacy. pp. 65–66. ISBN 978-1-63087-385-1.
^ Ehler, Sidney Zdeneck; Morrall, John B (1967). Church and State Through the Centuries: A Collection of Historic Documents with Commentaries. p. 6-7. ISBN 978-0-8196-0189-6. Archived
^ Dunner, Joseph (1967). Handbook of world history: concepts and issues. p. 70.
^ Campbell, Ted (1996). Christian Confessions: A Historical Introduction. p. 41. ISBN 978-0-664-25650-0.

[1] Papandrea, James Leonard (2012). Reading the Early Church Fathers: From the Didache to Nicaea. p. 177. ISBN 978-0-8091-4751-9.

[2] Smither, Edward L., ed. (2014-02-14). Rethinking Constantine: History, Theology, and Legacy. pp. 65–66. ISBN 978-1-63087-385-1.

[3] Ehler, Sidney Zdeneck; Morrall, John B (1967). Church and State Through the Centuries: A Collection of Historic Documents with Commentaries. p. 6-7. ISBN 978-0-8196-0189-6. Archived

[4] Dunner, Joseph (1967). Handbook of world history: concepts and issues. p. 70.

[5] Campbell, Ted (1996). Christian Confessions: A Historical Introduction. p. 41. ISBN 978-0-664-25650-0.

[1]

[2]

[3]

[4]

[5]