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Title: Homoiousian  
Author: World Heritage Encyclopedia
Language: English
Subject: Homoousian, God, Athanasius of Alexandria, Anomoeanism, Religious philosophy
Collection: Christian Movements, Christian Terminology, Religious Philosophy, Trinitarianism
Publisher: World Heritage Encyclopedia


A homoiousian (from the

  • Steenburg, MC, A World Full of Arians: A Study of the Arian Debate and the Trinitarian Controversy from AD 360–380, .

External links

  1. ^ Merriam-Webster, Inc. Merriam-Webster’s Collegiate Dictionary. Springfield, MA: Merriam-Webster, Inc., 2003.
  2. ^ Soanes, Catherine, and Angus Stevenson, eds. Concise Oxford English Dictionary. Oxford: Oxford University Press, 2004.
  3. ^ a b c Cross, F. L., and Elizabeth A. Livingstone, eds. The Oxford Dictionary of the Christian Church. Oxford; New York: Oxford University Press, 2005.


The term "homoiousion" was also preferred by many Origenists over the term "homoousion" because they felt it left "more room for distinctions in the Godhead".[3]:790 Another consideration may have been the association of the term "homoousion" with Paul of Samosata and with Gnosticism.[3]:790

The Homoiousians took a moderate stance between that of the Homoousians, and heteroousian such as Aetius and Eunomius. At a council in 358 at Sirmium, at the height of the movement's influence, the claim was made that the Son is "like [the Father] in all [respects]" (ὅμοιον κατὰ πάντα, hómoion katà pánta), while the use of οὐσία (ousía) or any of its compounds in theological discussion was strongly criticized but not abandoned, and the Anomoeans were anathematized. This compromise solution, which was satisfying to both the Homoians and the Homoiousians, deliberately set out to alienate the more extreme Neo-Arians. It was successful in this intent but it remained as illegitimate in the eyes of the pro-Nicenes as ever and Basil of Ancyra declared that "that which is like can never be the same as that to which it is like". On the other side, Constantius was becoming somewhat hostile to the influence of all of the new movements which had sprung up after the Nicene council. The result was that the Homoiousians disappeared from the stage of history and the struggle to define Church dogma became a two-sided battle between the Homoousians and the Homoians.


During the period of the development of Christian doctrine which ran from 360 to 380 AD, the controversy between Arianism and what would eventually come to be defined as orthodoxy provoked an enormous burgeoning of new movements, sects and doctrines which came into existence in the attempt to stabilize and consolidate a unique and universal position on complex and subtle theological questions. One of the main questions concerned the nature of God and the nature of his relationship with his Son, Jesus Christ. This controversy was called the "trinitarian controversy" because it involved solving the riddle of how it was possible that God could be three (God the Father, His Son Jesus the Word, and the Holy Spirit) and yet One at the same time. The dominant position among Christian theologians at this point in history was the doctrine of homoousianism, according to which Father and Son were identical in substance and in attributes and that any deviations from this orthodoxy were to be considered heresy. The Homoians, however, had a powerful ally on their side in the person of Emperor Constantius II.



  • Background 1
  • Doctrine 2
  • References 3
  • External links 4

Homoiousia ( ) is the theological doctrine that Jesus the Son of God and God the Father are of similar (ὁμοιο- homoio- or homeo-) but not the same substance, a position held by the Semi-Arians in the 4th century. It contrasts with the homoousia of orthodox Trinitarianism and the heteroousia of Arianism.

) the Father in some subordinate sense of the term. hómoios, ὅμοιος can not be described in any sense as "equal in substance or attributes" but only "like" (Son of God) in substance, with the "neo-Arian" position that God the Father is "incomparable" and therefore the homós, ὁμός (identical his son were Jesus and God the Father, who believed that homoousians pro-Nicene. It was an attempt to reconcile the seemingly irreconcilable views of the Arianism out of a wing of Christian religion Homoiousianism arose in the early period of the :580, 668[3]

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