village of
Geramon 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. The distinction between the Assyrian Church of the East and the
Chaldean Catholic Church 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 near
Urmia, Iran 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 Roman pope decided to appoint Yohannan Sulaqa as "Patriarch of Babylon" and named the breakaway church as 'The Church of Assyria and Mosul" 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 the ancient Assyrian town of
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 by muslim Turks in 1743, at the beginning of the
Ottoman–Persian War (1743–1746). Faced with a centuries-old rivalry and frequent
conflicts between two mighty
Islamic empires (
Ottoman and
Persian), all Christian communities in the bordering regions were constantly exposed to danger – and not only in the times of war, since local, mainly
Kurdish, warlords were accustomed to attacking
Assyrian and
Armenian Christian communities and monasteries and taking their land, often with Ottoman support. Patriarchs
Eliya X (XI) (1700–1722) and
Eliya XI (XII) (1722–1778) tried to improve the increasingly worsening position of their Christian flock by staying loyal to Ottoman authorities, but the local administration was frequently unable to provide effective protection. The Eliya line of traditionalist patriarchs ended in 1804 with the death of
Eliya XII (XIII) (1778–1804).
The junior Shimun line of Qochanis During the second half of the 16th century, traditionalist patriarchs of the Eliya line were faced with the continuous presence of the pro-Catholic movement, led by successors of
Shimun VIII Yohannan Sulaqa. After his death in 1555, the newly established line of patriarchs who were united with the Catholic Church was continued by
Abdisho IV Maron (1555–1570), who remained in
full communion with the Catholic Church. He visited Rome and was officially confirmed by the
Pope of Rome in 1562. Soon after his death, connections with Rome were weakened for the first time during the tenure of Patriarch
Yahballaha IV who did not seek confirmation from the pope. That interlude was ended by his successor
Shimun IX Dinkha (1580–1600) who restored full communion with the Catholic Church, and was officially confirmed by the Pope of Rome in 1584. After his death, the patriarchal office was made hereditary, and patriarchs of this line continued to use the name
Shimun, thus creating the Shimun line. Hereditary succession was not acceptable to Rome, and during the tenure of the next Patriarch
Shimun X Eliyah (1600–1638) ties with the Catholic Church were loosened again. In 1616, Shimun X signed a traditional profession of faith that was not accepted by the Roman pope, leaving the patriarch without Rome's confirmation. His successor
Shimun XI Eshuyow (1638–1656) restored communion with the Catholic Church as late as 1653, eventually receiving confirmation from the pope. By that time, the movement towards full commitment to the traditional faith was constantly growing stronger within the Shimun line. When the next Patriarch
Shimun XII Yoalaha decided to send his profession of faith to the pope, he was deposed by his bishops because of his pro-Catholic attitude. The pope tried to intervene on his behalf, but without success. Final resolution of conflicts within the Shimun line occurred under the next Patriarch
Shimun XIII Dinkha (1662–1700), who definitively broke communion with the Catholic Church. In 1670, he gave a traditionalist reply to an approach that was made from the Roman pope, and by 1672 all connections with the Catholic Church were terminated. At the same time, Patriarch Shimun XIII moved his seat from
Amid to
Qochanis. After the final return to the traditional faith, patriarchs of the Shimun line decided to keep their independence and after that time there were two independent lines of traditional patriarchs: the senior Eliya line in Alqosh and the junior Shimun line in Qochanis. Such division was additionally caused by the complex structure of local
Assyrian communities, traditionally organized as tribal confederations with each
tribe being headed by a local lord (
malik), while each
malik was ultimately subject to the patriarch, who mediated between Christian Assyrians and the Ottoman authorities.
Consolidation of remaining branches In 1780, at the beginning of the patriarchal tenure of
Eliya XII (XIII) (1778–1804), a group seceded from the Eliya line in Alqosh and elected
Yohannan Hormizd, who entered full communion with the Catholic Church and was officially appointed
Archbishop of Mosul and patriarchal administrator of the
Chaldean Catholic Church, in 1783. Only after the death in 1827 of the last representative of the Josephite line,
Joseph V Augustine Hindi, was Yohannan recognized as the Chaldean Catholic patriarch by the pope, in 1830. By this official appointment, the final merger of various factions committed to the union with the Catholic Church was achieved, thus forming the modern Chaldean Catholic Church. At the same time, the long coexistence and rivalry between two traditionalist patriarchal branches — the senior Eliya line of Alqosh and the junior Shimun line of Qochanis — ended in 1804 when the last primate of the Eliya line, Patriarch
Eliya XII (XIII) died and was buried in the ancient
Rabban Hormizd Monastery. His branch decided not to elect a new patriarch, thus enabling the remaining patriarch
Shimun XVI Yohannan (1780–1820) of the Shimun line to become the sole primate of both Assyrian traditionalist branches. Consolidated after 1804, the reunited traditionalist church led by patriarchs of the Shimun line became widely known as the "Assyrian Church of the East". Still based in Qodchanis, Assyrian Patriarch Shimun XVI Yohannan was not able to secure control over the traditional seat of the former Eliya line in the ancient Rabban Hormizd Monastery; and around 1808 that venerated monastic institution passed to the
Chaldean Catholics. The next Assyrian Patriarch
Shimun XVII Abraham (1820–1861) also governed his church from
Qodshanis. During years marked by political turbulence, he tried to maintain good relations with the local Ottoman authorities. In 1843, he was faced with renewed hostilities from
Kurdish warlords, who
attacked and looted many Christian villages, killing 10,000 Christian men and taking away women and children as captives. The patriarch himself was forced to take temporary refuge in
Mosul. He was succeeded by Patriarch
Shimun XVIII Rubil (1861–1903) who also resided in Qodshanis. In 1869, he received an open invitation from the
Vatican to visit
Rome to attend the
First Vatican Council as an observer, but he did not accept the invitation, In following years, he also rejected other initiatives for union with the Catholic Church. By the end of the 19th century, the Assyrian Church of the East consolidated itself as the sole representative of all traditionalist Assyrians. It also managed to secure a certain level of autonomy within the highly complex system of Ottoman local governance in the bordering regions. On several occasions, Assyrian patriarchs refused to enter communion with the Catholic Church or merge with the Chaldean Catholic Church. On the other hand, by the end of the 19th century some of its communities were converted to
Protestantism by various western missionaries, while other communities were drawn to
Eastern Orthodoxy. That movement was led by Assyrian Bishop Mar Yonan of
Supurghan in the region of
Urmia who converted to Eastern Orthodoxy in 1898, through the
Russian Ecclesiastical Mission in Urmia.
20th and 21st centuries . In spite of both ethnic and religious
persecution and a serious decline in membership since its height around the fourth century, the Assyrian Church of the East has survived into the 21st century. Among all the tragedies and schisms which thinned the church out, no other was as severe as the
Assyrian genocide. At that point the Assyrian Church of the East was based in the mountains of
Hakkari, as it had been since 1681. In 1915, The
Young Turks invaded the region—despite the Assyrians' plea of neutrality during the
Caucasus campaign by
Russia and their
Armenian allies—out of fear of an
Assyrian independence movement. In response to this, Assyrians of all denominations (the Assyrian Church of the East, the Chaldean Catholic Church, the
Syriac Orthodox Church and Assyrian Protestants) entered into a war of independence and allied themselves with the
United Kingdom, the
Russian Empire and the
Armenians against the Ottomans and their Islamic Kurdish,
Iranian and
Arab allies. Despite the odds, the Assyrians fought successfully against the Ottomans and their allies for three years throughout southeastern Turkey, northern Iraq, northwestern Iran and northeastern Syria. Eventually, however, they were abandoned by their allies, the Russian Empire and the
First Republic of Armenia, due to the
Russian Revolution and the collapse of the Armenian defense, leaving the Assyrians vastly outnumbered, surrounded, and cut off from supplies of ammunition and food. During this period, their See at Qodchanis was completely destroyed and the Turks and their Islamic allies massacred all of the Assyrians in the Hakkari Mountains. Those who survived fled into Iran with what remained of the Assyrian defense under
Agha Petros, but they were pursued into Iranian territory despite the fact they were fleeing. Later, in 1918, after the murder of their
de facto leader and Patriarch
Shimun XIX Benyamin and 150 of his followers during a negotiation, fearing further massacres at the hands of the Turks and Kurds, most of the survivors fled by train from Iran into what was to become Iraq. They sought protection under the
British mandate there, and joined the already existing indigenous Assyrian communities of both Eastern Orthodox and Catholic rites in the north, where they formed communities in
Baghdad,
Basra, and other areas.
Patriarch Shimun XXI Eshai In the aftermath of World War I, the British-educated Patriarch
Shimun XXI Eshai, born into the line of patriarchs at Qodchanis, had agitated for an independent Assyrian state. Following the end of the British mandate in 1933 and a
massacre of Assyrian civilians at
Simele by the Iraqi Army, the patriarch was forced to take refuge in
Cyprus. There, Shimun petitioned the
League of Nations regarding his people's fate, but to little avail, and he was consequently barred from entering Syria and Iraq. He traveled through
Europe before moving to
Chicago in 1940 to join the growing
Assyrian diaspora community there. Due to the church's and the general Assyrian community's disorganized state as a result of the conflicts of the 20th century, Patriarch Shimun XXI Eshai was forced to reorganize the church's structure in the
United States. He transferred his residence to
San Francisco in 1954, and was able to travel to
Iran,
Lebanon,
Kuwait, and
India, where he worked to strengthen the church. In 1964, the patriarch decreed a number of changes to the church, including liturgical reform, the adoption of the
Gregorian calendar, and the shortening of
Lent. These changes, combined with Shimun's long absence from Iraq, caused a rift in the community there, which led to another schism. In 1968, traditionalists within the church elected
Thoma Darmo as a rival patriarch to Shimun XXI Eshai, forming the independent
Ancient Church of the East, based in
Baghdad, Iraq. In 1972, Shimun decided to step down as patriarch, and the following year he got married, in contravention to longstanding church custom. This led to a synod in 1973 in which further reforms were introduced, the most significant of which included the permanent abolition of hereditary succession — a practice introduced in the middle of the fifteenth century by Patriarch
Shemon IV Basidi (who had died in 1497) — and it was also decided that Shimun should be reinstated. The second matter was supposed to be settled at another synod in 1975; however, Shimun was assassinated in November 1975 by an estranged relative before this could take place.
Patriarch Dinkha IV : Former Patriarchal See Almost a year after the death of Shimun,
Mar Khnanya Dinkha, Metropolitan of
Tehran, convened a synod of seven Assyrian bishops which took place at
St Paul's Abbey, Alton, in England, from 12 to 17 October 1976. They were joined by two
Church of England bishops, representing the
Archbishop of Canterbury and the
Bishop of London, and elected Dinkha as the 120th Catholicos-Patriarch of the Church of the East. On 17 October he was consecrated as
Dinkha IV at St Barnabas Church, Ealing, in an area where many Assyrians lived. Dinkha, who was then aged 33, operated his see at Tehran until the
Iran–Iraq War of 1980–1988, when he went into exile in the United States and transferred the Patriarchal See to Chicago. Much of his patriarchate had been concerned with tending to the Assyrian diaspora community and with ecumenical efforts to strengthen relations with other churches. On 26 March 2015, Dinkha IV died in the United States, leaving the Assyrian Church of the East in a period of
sede vacante until 18 September 2015. During that time,
Aprem Mooken served as the custodian of the
Patriarchate of Seleucia-Ctesiphon.
Patriarch Gewargis III On 18 September 2015, the Holy Synod of the Assyrian Church of the East elected the Metropolitan of Iraq, Jordan, and Russia, Warda Sliwa, to succeed the late
Dinkha IV as
Catholicos-Patriarch of the Assyrian Church of the East. On 27 September 2015, he was consecrated as Catholicos-Patriarch in the Cathedral Church of St. John the Baptist, in
Erbil, Iraq. Upon his consecration, he assumed the ecclesiastical name
Gewargis III. Church leaders proposed moving the Patriarchal See from Chicago back to Erbil. There have also been talks of reunification. In the
Common Christological Declaration Between the Catholic Church and the Assyrian Church of the East in 1994, the two churches recognized the legitimacy and rightness of each other's titles for
Mary. In 2005, the Assyrian Church of the East had about 380,000 members, mostly living in the United States,
Iran,
Iraq,
Syria, and Turkey.
Patriarch Awa III On 6 September 2021, Mar Gewargis III formally stepped down as Catholicos-Patriarch during an Extraordinary Session of the Holy Synod of the Assyrian Church of the East, leaving the Patriarchal See vacant. On 8 September 2021, the Holy Synod elected
Mar Awa Royel, Bishop of California and Secretary of the Holy Synod, to succeed Mar Gewargis III as the 122nd
Catholicos-Patriarch of the Assyrian Church of the East. ==Doctrine==