Assyrian Church of the East

The Assyrian Church of the East,, ar, كنيسة المشرق الآشورية sometimes called Church of the East, officially the Holy Apostolic Catholic Assyrian Church of the East,; ar, كنيسة المشرق الآشورية الرسولية الجاثلقية المقدسة is an Eastern Christian church that follows the traditional Christology and ecclesiology of the historical Church of the East. It belongs to the eastern branch of Syriac Christianity, and employs the Divine Liturgy of Saints Addai and Mari belonging to the East Syriac Rite. Its main liturgical language is Classical Syriac, a dialect of Eastern Aramaic, and the majority of its adherents are ethnic Assyrians.

The church also has an archdiocese located in India, known as the Chaldean Syrian Church of India. The Assyrian Church of the East is officially headquartered in the city of Erbil, in northern Iraq; its original area also spread into southeastern Turkey, northeastern Syria and northwestern Iran, corresponding roughly to ancient Assyria. The current Catholicos-Patriarch of the Assyrian Church of the East, Mar Awa III, was installed in September 2021.

The Assyrian Church of the East claims continuity with the historical Church of the East, and it is not in communion with either the Oriental Orthodox Churches or the Eastern Orthodox Church. The faction of the Church of the East that came to be in full communion with the Holy See of Rome is the Chaldean Catholic Church. After the Common Christological Declaration in 1994 between the Church of the East and the Catholic Church, and a 2001 theological dialogue between the churches, they drew up guidelines for faithful to have mutual admission to the Eucharist between the Chaldean Catholic Church and the Assyrian Church of the East.

The Assyrian Church of the East has a traditional episcopal structure, headed by the Catholicos-Patriarch. Its hierarchy is composed of metropolitan bishops and diocesan bishops, while lower clergy consists of priests and deacons, who serve in dioceses (eparchies) and parishes throughout the Middle East, India, North America, Oceania, and Europe (including the Caucasus and Russia).

History

The Assyrian Church of the East considers itself as the continuation of the Church of the East, a church that originally developed among the Assyrians during the first century AD in Assyria, Upper Mesopotamia and northwestern Persia, east of the Byzantine Empire. It is an apostolic church established by Thomas the Apostle, Addai of Edessa, and Bartholomew the Apostle. Contrary to a widespread opinion, the Apostle Saint Peter never visited the Church of Babylon

The historical distinctiveness of the Assyrian Church of the East resulted from the series of complex processes and events that occurred within the Church of the East during the transitional period that started in the middle of the 16th century, and lasted until the beginning of the 19th century. That turbulent period was marked by several consequent splits and mergers, resulting in the creation of separate branches and rival patriarchal lines. During the entire period, one of the main questions of dispute was the union with the Catholic Church. Ultimately, the pro-Catholic branches were consolidated as the Chaldean Catholic Church, while the traditional branches were consolidated as the Assyrian Church of the East.

Schisms and branches

During the patriarchal tenure of Shemon VII Ishoyahb (1539–1558), who resided in the ancient Rabban Hormizd Monastery near Alqosh, an internal dissent occurred over several issues, including the question of hereditary succession to the patriarchal throne, and the question of union with the Catholic Church. By that time, Franciscan missionaries had already gained some influence over several local communities, and they took an active role in organizing the opposition to the Patriarch at that time. By the end of 1552, a pro-Catholic party had been organized in Mosul under the leadership of the priest Yohannan Sulaqa, who decided to legitimize his position by traveling to Rome and seeking confirmation by Pope Julius III (1550–1555). Receiving support from the Franciscan missionaries, he arrived in Rome and entered into full communion with the Catholic Church in February 1553. At that point, officials of the Roman Curia were given incorrect information that the elderly Patriarch Shemon VII had actually died. After some deliberation, the Pope decided to appoint Yohannan Sulaqa as "Patriarch of Babylon" in April 1553.

Upon consecration, Yohannan Sulaqa took the name ''Shimun'' and by the end of the year he returned to his homeland. He started to organize the pro-Catholic party by appointing several metropolitans and bishops.

The senior Eliya line of Alqosh

Union with Rome was actively opposed by Patriarch Shemon VII Ishoyahb, who continued to reside in the Rabban Hormizd Monastery near Alqosh. He was succeeded by his nephew Eliya (1558–1591), who was designated as Eliya "VII" in older historiography, but renumbered as Eliya "VI" in recent scholarly works. The same renumbering was applied to his successors, who all took the same name thus creating the ''Eliya line''. During his patriarchal rule, the ''Eliya line'' preserved its traditional christology and full ecclesiastical independence. His successor was Patriarch Eliya VII (VIII) (1591–1617), who negotiated on several occasions with the Catholic Church, in 1605 and 1610, and again in 1615–1616, but without any conclusion. Further negotiations were abandoned by the next Patriarch Eliya VIII (IX) (1617–1660). David Wilmshurst noted that his successor, Patriarch Eliya IX (X) (1660–1700) also was a "vigorous defender of the traditional faith".

The Eliya line of traditionalist Patriarchs continued throughout the entire 18th century, residing in the ancient Monastery of Rabban Hormizd, which was eventually attacked and looted in 1743, at the beginning of the Ottoman–Persian War (1743–1746). Faced with a centuries-old rivalry and frequent conflicts between two mighty