Church of the East

Church of the East
Syriac: ܥܕܬܐ ܕܡܕܢܚܐ
Flickr - The U.S. Army - (218).jpg
Ruins of the ancient city and See of Assur.
ClassificationEastern Christianity
OrientationSyriac Christianity
HeadCatholicos-Patriarchs of the East
RegionMiddle East, South India, Far East
LiturgyEast Syriac Rite
(Liturgy of Addai and Mari)
HeadquartersAssur (Ottoman Empire)
FounderThomas the Apostle, by its tradition
OriginApostolic Age, by its tradition
Nestorian Schism (431–544)
Sasanian Empire
SeparationsAfter 1552, divided into: branch united with the Catholic Church and independent branch centered in Alqosh
Other name(s)Nestorian Church
Nestorian priests in a procession on Palm Sunday, in a 7th- or 8th-century wall painting from a Nestorian church in Tang China

The Church of the East (Syriac: ܥܕܬܐ ܕܡܕܢܚܐĒdṯāʾ d-Maḏenḥā), also known as the Nestorian Church,[note 1] was an Eastern Christian Church with an independent hierarchy since the Nestorian Schism (431–544), while tracing its history to the late first century CE in the satrapy of Asōristān ruled by the Parthian Empire. From there it spread to other parts of Asia during the late antiquity period and throughout the Middle Ages.

It originated as an eastern branch of Syriac Christianity, and used the East Syriac Rite in liturgy. It developed distinctive theological and ecclesiological traditions, and played a major role in the history of Christianity in Asia. Its Schism of 1552 led to a series of internal divisions during the early modern period, and it ultimately branched into the separate Chaldean Catholic Church (in full communion with the Holy See) and the independent Assyrian Church of the East.[1]

The Church of the East was headed by the Patriarch of the East, continuing a line that, according to its tradition, stretched back to the Apostolic Age, and the christianization of Upper Mesopotamia. The Church of the East declared itself separate from the state church of the Roman Empire during the Nestorian Schism in 424–427. Liturgically, the church adhered to the East Syriac Rite (Liturgy of Addai and Mari). Theologically, it adopted the dyophysite doctrine of Nestorianism, which emphasises the separateness of the divine and human natures of Jesus.

From the 6th century it expanded greatly, establishing communities in India (the Saint Thomas 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. Between the 9th and 14th centuries, at its height, the Church of the East represented the world's largest Christian church in terms of geographical extent, with dioceses stretching from its heartland in Upper Mesopotamia, from the Mediterranean Sea to as far afield as China, Mongolia, Central Asia, Anatolia, the Arabian Peninsula and India.

From its peak of geographical extent, the church experienced a rapid period of decline starting in the 14th century, due in large part 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; thereafter, Nestorian Christianity remained largely confined to the indigenous communities in Upper Mesopotamia and the Malabar Coast of the Indian subcontinent.

During the patriarchal tenure of Shemon VII Ishoyahb (1539–58), a split occurred when Shimun VIII Yohannan Sulaqa was elected as rival patriarch and entered into full communion with the Catholic Church in 1552, receiving confirmation from the Pope in 1553. After the Schism of 1552, the Church of the East became divided between two branches. After several additional splits and mergers during transitional period from the middle of the 16th century up to beginning of the 19th century, both branches were consolidated as the Chaldean Catholic Church, one of the Eastern Catholic Churches, today with 640,828 members, and the Assyrian Church of the East, today with 323,300 members, along with the Ancient Church of the East, at 100,000. The Indian branch of the Malabar Coast later on became the Syro-Malabar Catholic Church which is in full communion with Rome just as the Chaldean Catholic Church. However, a small faction within the Syro-Malabar group split off and joined with the Assyrian Church of the East in 1701, to form the Chaldean Syrian Church.

Organization and structure

The Church of the East was headed by the Patriarch of the East, an office that traces its origin to the Apostolic Age. The head of the church also bears the title "Catholicos". Like the churches from which it developed, the Church of the East has an ordained clergy divided into the three traditional orders of deacon, priest (or presbyter), and bishop. Also like other churches, it has an episcopal polity: organisation by dioceses, each headed by a bishop and made up of several individual parish communities overseen by priests. Dioceses are organised into provinces under the authority of a metropolitan bishop. The office of metropolitan bishop is an important one, and comes with additional duties and powers; canonically, only metropolitans can consecrate a patriarch.[2] The Patriarch also has the charge of the Province of the Patriarch.

For most of its history the church had six or so Interior Provinces in its heartland in northern Mesopotamia, southeastern Anatolia, and northwestern Iran and an increasing number of Exterior Provinces elsewhere. Most of these latter were located farther afield within the territory of the Sasanian Empire (and later the Caliphate), but very early on, provinces formed beyond the empire's borders as well. By the 10th century, the church had between 20[3] and 30 metropolitan provinces[4] According to John Foster, in the 9th century there were 25 metropolitans[5] including in China and India. The Chinese provinces were lost in the 11th century, and in the subsequent centuries, other exterior provinces went into decline as well. However, in the 13th century, during the Mongol Empire, the church added two new metropolitan provinces in North China, Tangut and Katai and Ong.[4]

Other Languages
العربية: كنيسة المشرق
беларуская: Царква Усходу
Bahasa Indonesia: Gereja dari Timur
português: Igreja do Oriente
slovenčina: Cirkev Východu
српски / srpski: Црква Истока
Tiếng Việt: Cảnh giáo
文言: 景教