"Homoousios" (of the same substance)
    In the 4th century AD the church was embroiled in a bitter
    controversy over the nature of Christ, and his relationship to the Father. A
    pastor and teacher named Arius believed and taught what came to be called
    Arianism: that God was greater than His Son, as a father must be superior to a
    son, and that the Son in turn had a literal beginning -- thus, that he did not
    exist from all eternity, as had his Father. In general outline, at least, this
    was much closer to the truth of the Bible than were the "orthodox" views of the
    time -- which should be considered the beginnings of the formulation of the
    false doctrine of the Trinity.
    
    While the whole content of the Arian position was condemned by
    the orthodox church, the terms of the debate turned upon two very similar Greek
    words: "homoousios" and "homoiousios". The difference was that the second word
    had one letter added, an iota. But the difference in meaning was very
    significant. The supporters of Arianism claimed that the Son was subordinate to
    the Father, who was the one true God. Thus they believed the Son was 'like or
    similar in substance' ["homoi" = similar] to the Father, but not identical. The
    word they used to denote the SIMILAR (but not exact) substance was
    "homoiousios".
    
    However, the Council of Nicea selected the word "homoousios"
    for what came to be called the Nicene Creed. [See Lesson,
    Nicene Creed] This word means 'of one or the same substance'; thus
    the Church insisted on the essential and absolute unity of the Father and the
    Son; in English translation: "And [I believe] in one Lord Jesus Christ, the
    only-begotten Son of God... being OF ONE SUBSTANCE with the Father..."
    
    
    [The actual words, "homoiousios" and "homoousios", do not
    appear in the text of the NT. The root word, "ousios", does occur -- but only
    twice: in Luke 15:12,13, in the parable of the Prodigal Son, where it signifies
    the possessions of the father, and the inheritance of the son. It is derived
    from the verb "to be", and thus seems to suggest -- very fundamentally (but also
    very vaguely and flexibly) -- what one is or what one has. (It may have been
    this very vagueness, as applied to what God the Father and His Son share, that
    commended this word and its derivatives to the different camps of
    bishops!)]
    
    Thus the only difference in the two terms was the Greek letter
    iota (similar to the English letter i) between the two halves of the words; this
    significantly changed the meaning of the first part of the word -- either "homo"
    (the same or identical) or "homoi" (similar). Later this doctrine summarized in
    "homo-ousios" was expanded to teach, even more fully, the one substance of the
    Father, the Son, and the Holy Spirit -- ie the Trinity!
    
    *****
    
    Arianism Versus the Council of Nicaea 
    
    Introduction
    
    The Church emerged in a world which reflected both Jewish and
    Greek values. One question occupying this non-Christian world was the contrast
    between the "One and the Many, between the ultimate unity that lay behind the
    visible universe and the incalculable variety that exists in the world" (Ward
    1955, 38). In short, philosophers were already questioning and seeking to
    understand the relationship between a Creator-God and the world which He had
    made. 
    
    The Jews believed in one unique and supreme God who created by
    His word. They generally saw this "Word" as an Eternal Wisdom from the one God
    -- the Word which He pronounced in the beginning, or the Wisdom which He
    created. Thereby the Father communicated Himself to man (Guitton 1965, 81).
    
    
    The Greeks, on the other hand, could not see how a finite and
    changeable world could come from an eternal and changeless God. They proposed
    the idea of a "mediating Intelligence, a first emanation of the first principle
    which reduced the distance between God and the world" (Guitton 1965, 81) -- a
    sort of semi-God who bridged the gap between a perfect God and an imperfect
    world. 
    
    The Church, as it developed its teachings, felt the need to
    "reconcile the notions they had inherited from Judaism with those they had
    derived from Greek philosophy. Jew and Greek had to meet in Christ. They sought
    to find an answer that would agree with the revelation they had received from
    Christ as recorded in the scriptures" (Ward 1955, 39). (It may be observed that,
    as more time passed, the official Church and its teachings got further and
    further from this presumed purpose.) This struggle for a reconciliation of
    thought reached one climax with the Arian controversy. The Church responded with
    the First Ecumenical Council of Nicaea that sought to bring together Scriptural
    and philosophical thought to explain the "Trinity". The Council did triumph over
    Arianism but only after fifty years of bitter battling. Imperial support (which
    wavered back and forth) as well as confusion in theological terminology (which
    included difficulties in translating complex terms from Greek to Latin, and vice
    versa) were the principal reasons for such a long drawn-out battle.
    
    Arius and His Teaching
    
    Arius, who was born in Egypt in 256 AD, was a parish priest in
    Alexandria. He had studied under Lucian of Antioch, the founder of the school of
    Antioch, who had earlier been condemned for holding that Christ was only a man;
    although he was later reconciled. Lucian is called the "Father of Arianism"
    because "Arius and almost all the 4th-century Arian theologians were his
    students. Calling themselves Lucianists and Collucianists, they developed his
    subordinationist tendencies into a full heresy" -- so writes a Catholic
    historian (Harkins 1967, 1057,1058). (Of course, "subordinationist" tendencies
    might properly describe just what Christadelphians believe today: ie, that Jesus
    was a begotten Son and thus subordinate, or subject, to his Father.) 
    
    With this background Arius struggled with the question of the
    Trinity. His teaching in Alexandria was as follows: "Personal distinctions were
    not eternally present within the nature of God... the Godhead Himself was
    responsible for them... Identifying the eternal Godhead with the Father and
    regarding the Logos as no more than a power or quality of the Father, Arius said
    that before time began the Father had created the Son by the power of the Word
    to be His agent in creation. The Son was not therefore to be identified with the
    Godhead. He was only God in a derivative sense, and since there was a time when
    he did not exist he could not be eternal. Arius stressed the subordination of
    the Logos to such an extent as to affirm his creaturehood, to deny his eternity
    and to assert his capacity for change and suffering" (Ward 1955, 41). This
    teaching of Arius "drove the distinctions outside the Deity and thus destroyed
    the Trinity. It meant solving the difficulty of the One and the Many by
    proposing a theory of one Supreme Being and two inferior deities" (Ward 1955,
    43). The Person of Christ "belonged to no order of being that the Church could
    recognize... He was neither God nor man" (Ward 1955, 42). [It ought to be noted
    here that, while Arius denies the teaching of the Trinity, as described by the
    pro-Catholic historians above, his view of Christ's "creation" and involvement
    in the literal creation of the world were certainly not scriptural
    either.]
    
    Arius versus the Alexandrian bishop
    
    Arius' views began to spread among the people and the
    Alexandrian clergy. Alexander the bishop called a meeting of his priests and
    deacons. The bishop insisted on the unity of the Godhead. Arius continued to
    argue that, since the Son was begotten of the Father, then at some point he
    began to exist. Therefore there was a time when the Son did not exist. Arius
    refused to submit to the bishop and continued to spread his teaching. Alexander
    called a synod of bishops of Egypt and Libya. Of the hundred bishops who
    attended, eighty voted for the condemnation and exile of Arius. After the synod
    Alexander wrote letters to the other bishops refuting Arius' views. In doing so
    the bishop Alexander used the term "homoousios" to describe the Father and Son
    as being of one substance. This term "was to become the keyword of the whole
    controversy" (Ward 1955, 43,44).
    
    With the decision of the synod Arius fled to Palestine. Some
    of the bishops there, especially Eusebius of Caesarea, supported him. From here
    Arius continued his journey to Nicomedia in Asia Minor. The bishop of that city,
    also named Eusebius, had studied under Lucian of Antioch. He became Arius' most
    influential supporter. From this city Arius enlisted the support of other
    bishops, many of whom had studied under Lucian. His supporters held their own
    synod, which found Arius' views to be correct, and condemned Bishop Alexander of
    Alexandria. Arius seemed to have good grounds for this condemnation. The term
    "homoousios" was rejected by Alexander's own predecessor Dionysius when arguing
    against the Sabellians (a group who claimed the Father and Son were absolutely
    identical). 
    
    All this controversy was taking place just as the Church was
    emerging from Roman oppression -- so that Imperial involvement in these matters
    would add more twists and turns to future events.
    
    Constantine and Ossius
    
    With the rise of Constantine to power, Christianity became the
    religion of the Roman Empire. Constantine had politically united the Empire but
    he was distressed to find a divided Christianity. Constantine, who most
    certainly did not understand the full significance of the controversy, sent
    Ossius his main ecclesiastical adviser with letters to both Alexander and Arius.
    In the letters he tried to reconcile them by saying that their disagreement was
    merely a matter of words. He felt that both of them really were in agreement on
    major doctrines and neither were involved in heresy. The letters failed to have
    any calming effect.
    
    In 325 AD Ossius presided over a Council of the Orient in
    Antioch that was attended by 59 bishops, 46 of whom would soon attend the
    Council of Nicaea. This Council in Antioch was a forerunner of the latter
    Council in Nicaea. Under the influence of Ossius a new Church practice was
    inaugurated -- that of issuing a creedal statement. At this Council Arianism was
    condemned, a profession of faith resembling the Alexandrian creed was
    promulgated, and three bishops who refused to agree with the teaching of this
    Council were provisionally excommunicated until the Council of Nicaea.
    
    In the summer of that year, probably under the suggestion of
    Ossius, Constantine called for a general council of the Church at Nicaea in
    Bithynia. That an Emperor should invoke a Council should not be considered
    unusual, since in Hellenistic thought he "was given by God supreme power in
    things material AND spiritual" (Davis 1987, 56).
    
    The Council of Nicaea
    
    The General Council was well attended by the major church
    leaders of the Eastern Empire. Some Western bishops were also present. Because
    of old age and sickness, Sylvester the bishop of Rome (whom Catholic historians
    call "Pope Sylvester"!) did not attend but sent two representatives. The total
    number of bishops who attended the Council has been disputed. Eusebius of
    Caesarea, who attended, claimed there were 250; Athanasius, also in attendance,
    mentioned 300; modern scholars put the number at 220.
    
    If there were minutes taken of the Council proceedings they
    are no longer in existence. We know from the writings of Rufinus that "daily
    sessions were held and that Arius was often summoned before the assembly; his
    arguments attentively considered. The majority, especially those who were
    confessors of the Faith, energetically declared themselves against [what they
    called] the impious (!) doctrines of Arius" (LeClercq 1913, 45).
    
    Concerning the Creed that was drafted at the Council,
    "Eusebius of Caesarea, Athanasius of Alexandria and Philostorgius have given
    divergent accounts of how this Creed was drafted" (DeClercq 1967, 792). But it
    appears, from one reconstruction of the events, that Eusebius of Nicomedia
    offered a creed favorable to Arian views. This creed was rejected by the
    Council. Eusebius of Caesarea proposed the baptismal creed used in Caesarea.
    Although accepted it does not seem to form the basis of the Council's Creed.
    Attempts were made to construct a creed using only scriptural terms. These
    creeds proved insufficient to exclude the Arian position. [Of course they did!
    How could Scriptural terms exclude a Scriptural idea?!] "Finally, it seems, a
    Syro-Palestinian creed was used as the basis for a new creedal statement... The
    finished creed was preserved in the writings of Athanasius, of the historian
    Socrates and of Basil of Caesarea and in the acts of the Council of Chalcedon of
    451" (Davis 1987, 59). When the creed was finished, eighteen bishops still
    opposed it. Constantine at this point intervened to threaten with exile anyone
    who would not sign it. Two Libyan bishops and Arius still refused to accept the
    creed. All three were exiled.
    
    The Creed and an Analysis
    
    Some parts of the literal translation of the Nicaea Creed are
    as follows:
    
    
        "We believe in one God the Father Almighty, Maker of all things visible and
        invisible; and in one Lord Jesus Christ, the only begotten of the Father, that
        is, of the substance (ousia) of the Father, God of God, light of light, true God
        of true God, begotten not made, of the same substance (homoousios) with the
        Father, through whom all things were made both in heaven and on earth... Those
        who say: 'There was a time when He was not, and He was not before He was
        begotten;' and that 'He was made out of nothing;' or who maintain that 'He is of
        another hypostasis or another substance,' or that 'the Son of God is created, or
        mutable, or subject to change,' the Catholic Church anathematizes [condemns]"
        (LeClercq 1913, 45).
    In case the creed was not enough to end the Arian controversy,
    anathemas (official, formally pronounced judgments) were attached directly
    condemning Arian positions (think of these as "doctrines to be rejected" by the
    emerging Catholic church!): 
    
    
        - The Arian denial of the Son's co-eternity with the Father;
        
 - The Arian
            assertion that "there was [a time] when the Son of God was not";
        
 - The Arian
            assertion that "before Jesus was begotten he did not exist."
        
 - The Arian
            doctrine that the Son -- being a creature and not a creator -- was subject to
            moral changeability and only remained virtuous by an act of the will; ie, that
            "He is mutable or alterable" [Note: this seems to contradict an earlier
            statement that Arius saw Jesus as one who assisted the Father in the actual work
            of creation; thus this later statement is at least closer to the truth of the
            matter]; and
        
 - The Arian position that the Son was subordinate to the Father
            and not really God, as expressed in the phrase "He is of a different hypostasis
            or substance."
    
 
    Terminology Problem
    
    A very important term used by the Council was "homoousios". At
    that time this word could have three possible meanings. "First, it could be
    generic, ie, of one substance; and could be said of two individual men, both of
    whom share human nature while remaining individuals. Second, it could signify
    numerical identity, that is, that the Father and the Son are identical in
    concrete being. Finally, it could refer to material things, as two pots are of
    the same substance because both are made of the same clay" (Davis 1987, 61). The
    Council intended the first meaning -- so as to stress the equality of the Son
    with the Father. If the second meaning for the word was taken to be the
    Council's intention, it would mean that the Father and Son were identical and
    indistinguishable -- this was a "heresy" even to the Catholic Church at this
    point! The third meaning gave the word a materialistic tendency that would imply
    that the Father and Son are parts of the same stuff.
    
    The Council's defeat by Arianism
    
    It is not surprising -- given the possible differences in
    meaning of the word as outlined above -- that the Council by using the word
    "homoousios" could be called into question. And of course, the need to translate
    between Greek and Latin probably in some cases contributed to the confusion and
    misunderstanding. 
    
    Bishop Eusebius of Nicomedia gained the confidence of Emperor
    Constantine. He convinced Constantine that the Council's use of the word
    "homoousios" (suggesting that Father and Son were identical) was heretical. The
    Emperor now favored the Arians. With the death of Constantine the Empire was
    divided between his sons. Constans who ruled in the West favored Nicaea while
    his brother Constantius who ruled the East was anti-Nicaea. Supporters of Nicaea
    in the East -- especially Bishop Athanasius -- were deposed and excommunicated
    by the Dedication Council of Antioch. This Council directly attacked the Nicaea
    Council by promulgating its own creed that omitted the phrases "from the
    substance of the Father" and "homoousios." Some attempts were made to find a
    substitute word for "homoousios". As many as fourteen Councils were held between
    341 and 360 "in which every shade of heretical subterfuge found expression...
    The term 'like in substance,' homoiousios... had been employed merely to get rid
    of the Nicene formula" (Barry 1913, 709). 
    
    Not all Arians agreed with this new word, however. One group
    emphasized that the Father and Son were in fact "not similar" -- or "anomoios"
    (the "a" or "an" prefix signifying "NOT") -- while another group used the word
    "similar" or "homoi" to describe the Father and Son relationship. [Thus at least
    groups may now be discerned: the "Homo" (identical) group; the "Homoi" (similar)
    group; and now the "Anomoi" (not similar) group!]
    
    With the death of Constans in 350 his anti-Nicaea brother
    Constantius became sole ruler of the Empire. The new Emperor demanded that all
    the bishops of his Empire should agree with the homoios ("similar") formula. In
    359 he summoned two Councils, one in the East at Seleucia and the other in the
    West at Rimini. Both Councils, under the Emperor's threats and with
    rationalizing arguments aimed at calming consciences, were induced to sign the
    homoios formula. This "homoios" (similar) victory "was confirmed and imposed on
    the whole Church by the Council of Constantinople in the following year" which
    condemned the terms homoousios ("identical") and anomoios ("not similar") (Ward
    1955, 57). Now it seemed that the Arians had triumphed over the Nicaea
    creed.
    
    The Final Battle
    
    The seeming triumph of homoiousios ("similar substance") was
    short-lived. First it gained its popularity solely by imperial imposition, and
    with the death of Constantius in 361 it collapsed. Athanasius reasserted the
    homoousios ("identical substance") position, and brought other church leaders to
    the "realization" that the three Persons as God must share the same identical
    substance also.
    
    In the West Ambrose of Milan led the fight for the Nicene
    Creed. At the Council of Sirmium in 378, with the support of the Western Emperor
    Gratian, six Arian bishops were deposed. A series of laws were passed in 379 and
    380 by the Emperor which prohibited Arianism in the West.
    
    Conclusion
    
    The Council of Nicaea was victorious in the end. It took over
    fifty years of bitter battling between the upholders of the Council of Nicaea
    and those against it. The Arian "heresy" seemed finished when the Council so
    specifically anathematized their teachings one by one. 
    
    Appendix: 
    
    Works Cited (essentially pro-Catholic publications):
    
    
        - The New Catholic Encyclopedia. 1967. New York: McGraw-Hill Book Co, Vol 1:
            Arianism, by VC Declercq.
        
 - The New Catholic Encyclopedia. 1967. New York:
            McGraw-Hill Book Co, Vol 8: St Lucian of Antioch, by PW Harkins.
        
 - Davis, SJ,
            Leo D. 1987. The First Seven Ecumenical Councils (325-787): Their History and
            Theology. Wilmington: Michael Glazier, Inc.
        
 - Guitton, Jean. 1965. Great
            Heresies and Church Councils. New York: Harper and Row.
        
 - Herbermann, Charles
            G, Edward A. Pace, Conde B. Pallen, Thomas J. Shahan, John J. Wynne, editors
            1913. The Catholic Encyclopedia. New York: The Encyclopedia Press, Vol 1,
            Arianism, by William Barry.
        
 - Herbermann, Charles G., Edward A. Pace, Conde B.
            Pallen, Thomas J. Shahan, John J. Wynne, eds. 1913. The Catholic Encyclopedia.
            New York: The Encyclopedia Press. Vol 11, Councils of Nicaea, by H
            Leclercq.
        
 - Ward, DD, Bishop JWC 1955. The Four Great Heresies. London: A.R.
            Mowbray and Co Ltd.
    
 
    [For a timeline, see Lesson, Arian controversy.]