Nestorian Church Of Persia

The Church of the East ( syc, ܥܕܬܐ ܕܡܕܢܚܐ, ''ʿĒḏtā d-Maḏenḥā'') or the East Syriac Church, also called the Church of Seleucia-Ctesiphon, the Persian Church, the Assyrian Church, the Babylonian Church or the Nestorian Church, was an Eastern Christian church of the East Syriac Rite, based in Mesopotamia. It was one of three major branches of Eastern Christianity that arose from the Christological controversies of the 5th and 6th centuries, alongside the Oriental Orthodox Churches and the Chalcedonian Church. During the early modern period, a series of schisms gave rise to rival patriarchates, sometimes two, sometimes three. Since the latter half of the 20th century, three churches in Iraq claim the heritage of the Church of the East. Meanwhile, the East Syriac churches in India claim the heritage of the Church of the East in India.

The Church of the East organized itself in 410 as the national church of the Sasanian Empire through the Council of Seleucia-Ctesiphon. In 424 it declared itself independent of the state church of the Roman Empire. The Church of the East was headed by the Catholicose of the East seated in Seleucia-Ctesiphon, continuing a line that, according to its tradition, stretched back to the Apostolic Age. According to its tradition, the Church of the East was established by Thomas the Apostle in the first century. Its liturgical rite was the East Syrian rite that employs the Divine Liturgy of Saints Addai and Mari.

The Church of the East, which was part of the Great Church, shared communion with those in the Roman Empire until the Council of Ephesus condemned Nestorius in 431. Supporters of Nestorius took refuge in Sasanian Persia, where the Church refused to condemn Nestorius and became accused of Nestorianism, a heresy incorrectly attributed to Nestorius. It was therefore called the Nestorian Church by all the other Eastern churches, both Chalcedonian and non-Chalcedonian, and by the Western Church. Politically the Sassanian and Roman empires were at war with each other, which forced the Church of the East to distance itself from the churches within Roman territory. More recently, the "Nestorian" appellation has been called "a lamentable misnomer", and theologically incorrect by scholars. However, the Church of the East started to call itself Nestorian, it anathematized the Council of Ephesus, and in its liturgy Nestorius was mentioned as a saint. In 544, the general Council of the Church of the East approved the Council of Chalcedon at the Synod of Mar Aba I in 544.

Continuing as a ''dhimmi'' community under the Sunni Caliphate after the Muslim conquest of Persia (633–654), the Church of the East played a major role in the history of Christianity in Asia. Between the 9th and 14th centuries, it represented the world's largest Christian denomination in terms of geographical extent. It established dioceses and communities stretching from the Mediterranean Sea and today's Iraq and Iran, to India (the Saint Thomas Syrian Christians of Kerala), the Mongol kingdoms in Central Asia, and China during the Tang dynasty (7th–9th centuries). In the 13th and 14th centuries, the church experienced a final period of expansion under the Mongol Empire, where influential Church of the East clergy sat in the Mongol court.

Even before the Church of the East underwent a rapid decline in its field of expansion in Central Asia in the 14th century, it had already lost ground in its home territory. The decline is indicated by the shrinking list of active dioceses. Around the year 1000, there were more than sixty dioceses throughout the Near East, but by the middle of the 13th century there were about twenty, and after Timur Leng the number was further reduced to seven only. In the aftermath of the division of the Mongol Empire, the rising Chinese and Islamic Mongol leaderships pushed out and nearly eradicated the Church of the East and its followers. Thereafter, Church of the East dioceses remained largely confined to Upper Mesopotamia and to the Saint Thomas Syrian Christians in the Malabar Coast (modern-day Kerala, India).

Divisions occurred within the church itself, but by 1830 two unified patriarchates and distinct churches remained: the Assyrian Church of the East and the Chaldean Catholic Church (an Eastern Catholic Church in communion with the Holy See). The Ancient Church of the East split from the Assyrian Church of the East in 1968. In 2017, the Chaldean Catholic Church had approximately 628,405 members and the Assyrian Church of the East had 323,300 to 380,000, while the Ancient Church of the East had 100,000.

Background

The Church of the East's declaration in 424 of the independence of its head, the Patriarch of the East, preceded by seven years the 431 Council of Ephesus, which condemned Nestorius and declared that Mary, mother of Jesus, can be described as Mother of God. Two of the generally accepted ecumenical councils were held earlier: the First Council of Nicaea, in which a Persian bishop took part, in 325, and the First Council of Constantinople in 381. The Church of the East accepted the teaching of these two councils, but ignored the 431 Council and those that followed, seeing them as concerning only the patriarchates of the Roman Empire ( Rome, Constantinople, Alexandria, Antioch, Jerusalem), all of which were for it "''Western'' Christianity".

Theologically, the Church of the East adopted dyophysite doctrine of Theodore of Mopsuestia that emphasised the "distinctiveness" of the divine and the human natures of Jesus. But this doctrine was misleadingly labelled as 'Nestorian' by its theological opponents.

In the 6th century and thereafter, the Church of the East expanded greatly, establishing communities in India (the Saint Thomas Syrian Christians), among the Mongols in Central Asia, and in China, which became home to a thriving community under the Tang dynasty from the 7th to the 9th century. At its height, between the 9th and 14th centuries, the Church of the East was the world's largest Christian church in geographical extent, with dioceses stretching from its heartland in Upper Mesopotamia to the Mediterranean Sea and as far afield as China, Mongolia, Central Asia, Anatolia, the Arabian Peninsula and India.

From its peak of geographical extent, the church entered a period of rapid decline that began in the 14th century, due largely to outside influences. The Chinese Ming dynasty overthrew the Mongols (1368) and ejected Christians and other foreign influences from China, and many Mongols in Central Asia converted to Islam. The Muslim Turco-Mongol leader Timur (1336–1405) nearly eradicated the remaining Christians in the Middle East. Nestorian Christianity remained largely confined to communities in Upper Mesopotamia and the Saint Thomas Syrian Christians of the Malabar Coast in the Indian subcontinent.

In the early modern period, the schism of 1552 led to a series of internal divisions and ultimately to its branching into three separate churches: the Chaldean Catholic Church, in full communion with the Holy See, and the independent Assyrian Church of the East and Ancient Church of the East.

Description as Nestorian

Nestorianism is a Christological doctrine that emphasises the distinction between the human and divine natures of Jesus. It was attributed to Nestorius, Patriarch of Constantinople from 428 to 431, whose doctrine represented the culmination of a philosophical current developed by scholars at the School of Antioch, most notably Nestorius's mentor Theodore of Mopsuestia, and stirred controversy when Nestorius publicly challenged the use of the title ''Theotokos'' (literally, "Bearer of God") for Mary, mother of Jesus, suggesting that the title denied Christ's full humanity. He argued that Jesus had two loosely joined natures, the divine Logos and the human Jesus, and proposed '' Christotokos'' (literally, "Bearer of the Christ") as a more suitable alternative title. His statements drew criticism from other prominent churchmen, particularly from Cyril, Patriarch of Alexandria, who had a leading part in the Council of Ephesus of 431, which condemned Nestorius for heresy and deposed him as Patriarch.

After 431, the state authorities in the Roman Empire suppressed Nestorianism, a reason for Christians under Persian rule to favour it and so allay suspicion that their loyalty lay with the hostile Christian-ruled empire."Nestorius"
''Encyclopædia Britannica''. Retrieved 11 November 2018.

It was in the aftermath of the slightly later Council of Chalcedon (451), that the Church of the East formulated a distinctive theology. The first such formulation was adopted at the Synod of Beth Lapat in 484. This was developed further in the early seventh century, when in an at first successful war against the Byzantine Empire the Sasanid Persian Empire incorporated broad territories populated by West Syrians, many of whom were supporters of the miaphysite theology of Oriental Orthodoxy which its opponents term "Monophysitism" ( Eutychianism), the theological view most opposed to Nestorianism. They received support from Khosrow II, influenced by his wife Shirin. Shirin was a member of the Church of East, but later joined the miaphysite church of Antioch.

Drawing inspiration from Theodore of Mopsuestia, Babai the Great (551−628) expounded, especially in his ''Book of Union'', what became the normative Christology of the Church of the East. He affirmed that the two (a Syriac term, plural of ''qnoma'', not corresponding precisely to Greek φύσις or οὐσία or ὑπόστασις) of Christ are unmixed but eternally united in his single (from Greek πρόσωπον ''prosopon