The Council of Ephesus was a council of Christian bishops convened in Ephesus (near present-day Selçuk in Turkey) in AD 431 by the Roman emperor Theodosius II. This third ecumenical council, an effort to attain consensus in the church through an assembly representing all of Christendom, confirmed the original Nicene Creed, and condemned the teachings of Nestorius, Patriarch of Constantinople, who preferred that the Virgin Mary be called Christotokos, "Christ-bearer" over Theotokos, "God-bearer"; in contrast to Cyril of Alexandria who deemed that Theotokos is enough on its own. It met from 22 June to 31 July 431 at the Church of Mary in Ephesus in Anatolia.
Background
Nestorius' doctrine, Nestorianism, which emphasized the distinction between Christ's human and divine natures and argued that Mary should preferably be called Christotokos (Christ-bearer) over Theotokos (God-bearer), had brought him into conflict with other church leaders, most notably Cyril, Patriarch of Alexandria. Nestorius himself had requested the Emperor to convene the council, hoping that it would prove his orthodoxy; the council in fact condemned his teachings as heresy. The council declared Mary as Theotokos (Mother of God).
Nestorius' dispute with Cyril had led the latter to seek validation from Pope Celestine I, who offered his support for Cyril to request that Nestorius recant his position or face excommunication. Nestorius pleaded with the Eastern Roman Emperor Theodosius II to call a council in which all grievances could be aired, hoping that he would be vindicated and Cyril condemned.
Approximately 250 bishops were present. The proceedings were conducted in a heated atmosphere of confrontation and recriminations and created severe tensions between Cyril and Theodosius II. Nestorius was decisively outplayed by Cyril and removed from his see, and his teachings were officially anathematized. This precipitated the Nestorian Schism, by which churches supportive of Nestorius, especially in the Persian Empire of the Sassanids, were severed from the rest of Christendom and became known as Nestorian Christianity, or the Church of the East, whose present-day representatives are the Assyrian Church of the East, the Ancient Church of the East, the Chaldean Syrian Church, and the Chaldean Catholic Church (which restored communion with Rome).
History
Political context
John McGuckin cites the "innate rivalry" between Alexandria and Constantinople as an important factor in the controversy between Cyril of Alexandria and Nestorius. However, he emphasizes that, as much as political competition contributed to an "overall climate of dissent", the controversy cannot be reduced merely to the level of "personality clashes" or "political antagonisms". According to McGuckin, Cyril viewed the "elevated intellectual argument about Christology" as ultimately one and the same as the "validity and security of the simple Christian life".
Even within Constantinople, some supported the Roman-Alexandrian, and others supported the Nestorian factions. For example, Pulcheria supported the Roman-Alexandrian popes while the emperor and his wife supported Nestorius.
Theological context
Contention over Nestorius' teachings, which he developed during his studies at the School of Antioch, largely revolved around his rejection of the long-used title Theotokos ("Carrier of God") for the Virgin Mary. Shortly after his arrival in Constantinople, Nestorius became involved in the disputes of two theological factions, which differed in their Christology.
McGuckin ascribes Nestorius' importance to his being the representative of the Antiochene (an adjectival form of the word 'Antioch') tradition and characterizes him as a "consistent, if none too clear, exponent of the longstanding Antiochene dogmatic tradition". Nestorius was greatly surprised that what he had always taught in Antioch without any controversy whatsoever should prove to be so objectionable to the Christians of Constantinople. Nestorius emphasized the dual natures of Christ, trying to find a middle ground between those who emphasized the fact that in Christ God had been born as a man, and who insisted on calling the Virgin Mary Theotokos (Greek: Θεοτόκος, "God-bearer"), and those that rejected that title because God as an eternal being could not have been born. Nestorius suggested the title Christotokos (Χριστοτόκος, "Christ-bearer"), but this proposal did not gain acceptance on either side.
Nestorius tried to answer a question: "How can Jesus Christ be God and man at the same time?" He taught that Mary, the mother of Jesus gave birth to the incarnate Christ, not the divine Logos, which referred to the Logos in its divine nature, according to Antiochene usage, who existed before Mary and indeed before time itself. Consequently, Nestorius argued that the Virgin Mary should be called Christotokos, Greek for "Carrier of Christ", and not only Theotokos, Greek for "Carrier of God".
According to McGuckin, several mid-twentieth-century accounts have tended to "romanticise" Nestorius; in opposition to this view, he asserts that Nestorius was no less dogmatic and uncompromising than Cyril, and that he was clearly just as prepared to use his political and canonical powers as Cyril or any of the other hierarchs of the period.
Nestorius's opponents charged him with detaching Christ's divinity and humanity into two persons existing in one body, thereby denying the reality of the Incarnation. Eusebius, a layman who later became the bishop of the neighbouring Dorylaeum, was the first to accuse Nestorius of heresy, but his most forceful opponent was Patriarch Cyril of Alexandria. Cyril argued that Nestorius's two-natures formula necessarily leads to two Sons.
Cyril appealed to Pope Celestine I of Rome, charging Nestorius with heresy. The Pope agreed and gave Cyril his authority to serve a notice to Nestorius to recant his views within ten days or else be excommunicated. Before acting on the Pope's commission, Cyril convened a synod of Egyptian bishops, which condemned Nestorius as well. Cyril then sent four suffragan bishops to deliver both the Pope's commission as well as the synodal letter of the Egyptian bishops. Cyril sent a letter to Nestorius known as the "Third Epistle of Saint Cyril to Nestorius". This epistle drew heavily on the established Patristic Constitutions and contained the most famous article of Alexandrian Orthodoxy: "The Twelve Anathemas of Saint Cyril". In these anathemas, Cyril excommunicated anyone who followed the teachings of Nestorius. For example, "Anyone who dares to deny the Holy Virgin the title Theotokos is Anathema!" Nestorius, however, still would not repent. McGuckin points out that other representatives of the Antiochene tradition such as John of Antioch, Theodoret and Andrew of Samosata were able to recognize "the point of the argument for Christ's integrity" and concede the "ill-advised nature of Nestorius' immoveability". Concerned at the potential for a negative result at a council, they urged Nestorius to yield and accept the use of the title Theotokos when referring to the Virgin Mary.
For example, John of Antioch wrote to Nestorius urging him to submit to the Pope's judgment and cease stirring up controversy over a word that he disliked (Theotokos) but which could be interpreted as having an orthodox meaning especially in light of the fact that many saints and doctors of the church had sanctioned the word by using it themselves. John wrote to Nestorius, "Don't lose your head. Ten days! It will not take you twenty-four hours to give the needed answer.... Ask advice of men you can trust. Ask them to tell you the facts, not just what they think will please you.... You have the whole of the East against you, as well as Egypt." Despite this advice from his colleagues, Nestorius persisted in maintaining the rightness of his position.
Convocation
On 19 November, Nestorius, anticipating the ultimatum decision which was about to be delivered, convinced Emperor Theodosius II to summon a general council through which Nestorius hoped to convict Cyril of heresy and thereby vindicate his own teachings. Theodosius issued a Sacra calling for the metropolitan bishops to assemble in the city of Ephesus, which was a special seat for the veneration of Mary, where the theotokos formula was popular. Each bishop was to bring only his more eminent suffragans. The date set by the Emperor for the opening of the council was Pentecost (7 June) 431.
McGuckin notes that the vagueness of the Sacra resulted in wide variations of interpretation by different bishops. In particular, the vastness of John of Antioch's ecclesiastical territory required a lengthy period to notify and gather his delegates. Because the overland trip from Antioch to Ephesus was long and arduous, John composed his delegation of his metropolitan bishops, who were restricted to bring no more than two suffragans each. By doing so, he minimized the number who would have to travel to Ephesus. Neither of the emperors attended the council. Theodosius appointed Count Candidian as the head of the imperial palace guard to represent him, to supervise the proceedings of the Council, and to keep good order in the city of Ephesus. Despite Nestorius' agenda of prosecuting Cyril, Theodosius intended for the council to focus strictly on the christological controversy. He thus gave Candidian strict directions to remain neutral and not to interfere in the theological proceedings. It is generally assumed that Candidian initially maintained his neutrality as instructed by the emperor and only gradually became more biased towards Nestorius. McGuckin, however, suggests that Candidian may have favored Nestorius from the start.
Assembly
Celestine sent Arcadius and Projectus to represent himself and his Roman council; in addition, he sent the Roman priest, Philip, as his personal representative. Cyril, Patriarch of Alexandria, was president of the council. Celestine had directed the papal legates not to take part in the discussions but to give judgment on them.
Bishops arrived in Ephesus over a period of several weeks. While waiting for the other bishops to arrive, they engaged in informal discussions characterized as tending to "exasperate rather than heal their differences" The metropolitan of Ephesus, Memnon, was already present with his 52 bishops. Nestorius and his 16 bishops were the first to arrive shortly after Easter. As archbishop of the imperial city of Constantinople, he travelled with a detachment of troops who were under the command of Count Candidian. McGuckin notes that the troops were not there to serve as Nestorius' bodyguard but to support Candidian in his role as the emperor's representative. However, McGuckin theorizes that Candidian's progressive abandonment of neutrality in favor of Nestorius may have created the perception that Candidian's troops were, in fact, there to support Nestorius. Candidian ordered all monks and lay strangers to leave the city; he further instructed the bishops not to leave on any pretext until the council was concluded. Several sources comment that the purpose of this injunction was to prevent bishops from leaving the council to appeal to the emperor directly.
According to McGuckin, Memnon, as bishop of Ephesus, commanded the "fervent and unquestioned loyalty" of the local populace and thus could count on the support of local factions to counterbalance the military might of Candidian's troops. In view of the verdict of Rome against Nestorius, Memnon refused to have communion with Nestorius, closing the churches of Ephesus to him.
Cyril brought with him 50 bishops, arriving only a few days before Pentecost. There were very few bishops representing the West, as the papal representatives would not arrive until July. The Palestinian delegation of 16 bishops and Metropolitan Flavian of Philippi arrived five days after the date that had been set for opening the council and aligned themselves with Cyril.
At this point, Cyril announced his intention to open the council; however, Candidian enjoined him from doing so on the grounds that the Roman and Antiochean delegations had not arrived yet. Cyril initially acceded to Candidian's injunction knowing that he could not legally convene a council without the official reading of the Emperor's Sacra.
A number of bishops, who were undecided between Nestorius and Cyril, did not want to give Cyril, as one party in the dispute, the right to chair the meeting and decide the agenda; however, they began to take Cyril's side for various reasons.