The Chalcedonian Definition is a declaration of Christ's nature, adopted at the Council of Chalcedon in AD 451. Chalcedon was an early centre of Christianity located in Asia Minor. The council was the fourth of the ecumenical councils that are accepted by Chalcedonian churches which include the Catholic, Eastern Orthodox, Lutheran, Anglican and Reformed churches.
The Council of Chalcedon was the fourth ecumenical council of the Christian Church. It was convoked by the Roman emperor Marcian. The council convened in the city of Chalcedon, Bithynia from 8 October to 1 November 451 AD. The council was attended by over 520 bishops or their representatives, making it the largest and best-documented of the first seven ecumenical councils. The principal purpose of the council was to re-assert the teachings of the ecumenical Council of Ephesus against the heresies of Eutyches and Nestorius. Such heresies attempted to dismantle and separate Christ's divine nature from his humanity (Nestorianism) and further, to limit Christ as solely divine in nature (Monophysitism).
Nestorianism is a term used in Christian theology and Church history to refer to several mutually related but doctrinally distinct sets of teachings. The first meaning of the term is related to the original teachings of Christian theologian Nestorius, who promoted specific doctrines in the fields of Christology and Mariology. The second meaning of the term is much wider, and relates to a set of later theological teachings, that were traditionally labeled as Nestorian, but differ from the teachings of Nestorius in origin, scope and terminology. The Oxford English Dictionary defines Nestorianism as "The doctrine of Nestorius, patriarch of Constantinople, by which Christ is asserted to have had distinct human and divine persons."
Chalcedonian Christianity is a term referring to the branches of Christianity that accept and uphold theological resolutions of the Council of Chalcedon, the Fourth Ecumenical Council, held in 451. Chalcedonian Christianity accepts the Christological Definition of Chalcedon, a Christian doctrine concerning the union of two natures in one hypostasis of Jesus Christ, who is thus acknowledged as a single person (prosopon). Chalcedonian Christianity also accepts the Chalcedonian confirmation of the Niceno-Constantinopolitan Creed, thus acknowledging the commitment of Chalcedonism to Nicene Christianity.
Nestorius was the Archbishop of Constantinople from 10 April 428 to August 431. A Christian theologian from the Catechetical School of Antioch, several of his teachings in the fields of Christology and Mariology were seen as controversial and caused major disputes. He was condemned and deposed from his see by the Council of Ephesus, the third Ecumenical Council, in 431.
Patriarchate is an ecclesiological term in Christianity, designating the office and jurisdiction of an ecclesiastical patriarch. According to Christian tradition three patriarchates were established by the apostles as apostolic sees in the 1st century: Rome, Antioch, and Alexandria. Constantinople was added in the 4th century and Jerusalem in the 5th century. Eventually, together, these five were recognised as the pentarchy by the Council of Ephesus in 431.
The Syriac Orthodox Church, also known as West Syriac Church or West Syrian Church, officially known as the Syriac Orthodox Patriarchate of Antioch and All the East, and informally as the Jacobite Church, is an Oriental Orthodox church that branched from the Church of Antioch. The bishop of Antioch, known as the patriarch, heads the church and possesses apostolic succession through Saint Peter, according to sacred tradition. The church upholds Miaphysite doctrine in Christology, and employs the Divine Liturgy of Saint James, associated with James, the brother of Jesus. Classical Syriac is the official and liturgical language of the church.
Monoenergism was a notion in early medieval Christian theology, representing the belief that Christ had only one "energy" (energeia). The teaching of one energy was propagated during the first half of the seventh century by Patriarch Sergius I of Constantinople. Opposition to dyoenergism, its counterpart, would persist until Dyoenergism was espoused as Orthodoxy at the Sixth Ecumenical Council and monoenergism was rejected as heresy.
Jacob Baradaeus, also known as Jacob bar Addai or Jacob bar Theophilus, was the Bishop of Edessa from 543/544 until his death in 578. He is venerated as a saint in the Oriental Orthodox Churches and his feast day is 31 July. Jacob's missionary efforts helped establish the non-Chalcedonian Syriac Orthodox Church, also known as the "Jacobite" Church after its eponymous leader, and ensured its survival despite persecution.
The Patriarch of Antioch is a traditional title held by the bishop of Antioch. As the traditional "overseer" of the first gentile Christian community, the position has been of prime importance in Pauline Christianity from its earliest period. This diocese is one of the few for which the names of its bishops from the apostolic beginnings have been preserved. Today five churches use the title of patriarch of Antioch: one Oriental Orthodox ; three Eastern Catholic ; and one Eastern Orthodox.
Dioscorus I, also known as Dioscorus the Great, was the pope of Alexandria and patriarch of the See of St. Mark who was deposed by the Council of Chalcedon in 451. He was recognized as patriarch by the Coptic Church until his death. He died in Gangra, Paphlagonia, in September 454. He is venerated as a saint by the Coptic and other Oriental Orthodox Churches.
Severus the Great of Antioch, also known as Severus of Gaza or the Crown of Syrians, was the Patriarch of Antioch, and head of the Syriac Orthodox Church, from 512 until his death in 538. He is venerated as a saint in the Oriental Orthodox Church, and his feast day is 8 February.
The Henotikon was a christological document issued by Byzantine emperor Zeno in 482, in an unsuccessful attempt to reconcile the differences between the supporters of the Council of Chalcedon and the council's opponents. It was followed by the Acacian schism.
Syriac Christianity is a distinctive branch of Eastern Christianity whose formative theological writings and traditional liturgies are expressed in the Classical Syriac language, a variation of the old Aramaic language. In a wider sense, the term can also refer to Aramaic Christianity in general, thus encompassing all Christian traditions that are based on liturgical uses of Aramaic language and its variations, both historical and modern.
The term Melkite, also written Melchite, refers to various Eastern Christian churches of the Byzantine Rite and their members originating in the Middle East. The term comes from the common Central Semitic root m-l-k, meaning "royal", and by extension "imperial" or loyal to the Byzantine Emperor. The term acquired religious connotations as denominational designation for those Christians who accepted imperial religious policies, based on Christological resolutions of the Council of Chalcedon (451).
Miaphysitism is the Christological doctrine that holds Jesus, the "Incarnate Word, is fully divine and fully human, in one 'nature' (physis)." It is a position held by the Oriental Orthodox Churches and differs from the Chalcedonian position that Jesus is one "person" in two "natures", a divine nature and a human nature (Dyophysitism).
Oriental Orthodoxy is the communion of Eastern Christian Churches that recognize only three ecumenical councils—the First Council of Nicaea, the First Council of Constantinople and the Council of Ephesus. They reject the dogmatic definitions of the Council of Chalcedon. Hence, these Churches are also called Old Oriental Churches or Non-Chalcedonian Churches.
The Oriental Orthodox Churches are Eastern Christian churches adhering to Miaphysite Christology, with approximately 60 million members worldwide. The Oriental Orthodox Churches are part of the Nicene Christian tradition, and represent one of its oldest branches.
The Third Council of Ephesus was held in the Anatolian city of Ephesus in 475. It was presided over by Pope Timothy II of Alexandria, and also attended by Peter the Fuller, then Patriarch of Antioch, and Paul the Exarch of Ephesus. It ratified a recent Encyclical of Emperor Basiliscus, reportedly signed by 500-700 bishops throughout the Empire, which condemned the Council of Chalcedon and particularly the Tome of Leo. This council thus constitutes one of the most significant synodical condemnations of Chalcedon for the Oriental Orthodox. In response to the accusations of certain Chalcedonians that they, the Non-Chalcedonians, had adopted the erroneous teachings of Eutyches, the attendees of Ephesus III summarily anathematized all teachings which compromised the humanity of Christ, but without any explicit mention of Eutyches. Additionally, the council restored the complete autonomy of the Ecclesiastical Exarchate of Ephesus, which had been compromised at Chalcedon by ascribing authority to the Patriarch of Constantinople over Thrace, Pontus, and Asia.
The First Council of Dvin was a church council held in 506 in the city of Dvin. It convened to discuss the Henotikon, a christological document issued by Byzantine emperor Zeno in an attempt to resolve theological disputes that had arisen from the Council of Chalcedon.
