Eastern Christianity comprises Christian traditions and church families that originally developed during classical and late antiquity in Eastern Europe, Southeastern Europe, Asia Minor, the Caucasus, Northeast Africa, the Fertile Crescent and the Malabar coast of South Asia, and ephemerally parts of Persia, Central Asia, the Near East and the Far East. The term does not describe a single communion or religious denomination.
Full communion is a communion or relationship of full agreement among different Christian denominations or Christian individuals that share certain essential principles of Christian theology. Views vary among denominations on exactly what constitutes full communion, but typically when two or more denominations are in full communion it enables services and celebrations, such as the Eucharist, to be shared among congregants or clergy of any of them with the full approval of each.
Assyrians are an indigenous ethnic group native to Assyria, a geographical region in Western Asia. Modern Assyrians descend from their ancient counterparts, originating from the ancient indigenous Mesopotamians of Akkad and Sumer, who first developed the civilisation in northern Mesopotamia that would become Assyria in 2600 BCE. Modern Assyrians may culturally self-identify as Syriacs, Chaldeans, or Arameans for religious, geographic and tribal identification.
The Assyrian Church of the East (ACOE), sometimes called Church of the East, officially the Holy Apostolic Catholic Assyrian Church of the East (HACACE), 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 Chaldean Catholic Church is an Eastern Catholic particular church in full communion with the Holy See and the rest of the Catholic Church, and is headed by the Chaldean Patriarchate. Employing in its liturgy the East Syriac Rite in the Syriac dialect of the Aramaic language, it is part of Syriac Christianity. Headquartered in the Cathedral of Our Lady of Sorrows, Baghdad, Iraq, since 1950, it is headed by the Catholicos-Patriarch Louis Raphaël I Sako. In 2010, it had a membership of 490,371, of whom 310,235 (63.27%) lived in the Middle East.
A catholicos is the head of certain churches in some Eastern Christian traditions. The title implies autocephaly and, in some cases, it is the title of the head of an autonomous church. The word comes from ancient Greek καθολικός, derived from καθ' ὅλου from κατά and ὅλος, meaning "concerning the whole, universal, general"; it originally designated a financial or civil office in the Roman Empire.
Syriac Christianity is a distinctive branch of Eastern Christianity, whose formative theological writings and traditional liturgies are expressed in the Classical Syriac language, a variation of the old Aramaic language. In a wider sense, the term can also refer to Aramaic Christianity in general, thus encompassing all Christian traditions that are based on liturgical uses of Aramaic language and its variations, both historical and modern.
The East Syriac Rite or East Syrian Rite, also called the Edessan Rite, Assyrian Rite, Persian Rite, Chaldean Rite, Nestorian Rite, Babylonian Rite or Syro-Oriental Rite, is an Eastern Christian liturgical rite that employs the Divine Liturgy of Saints Addai and Mari and the East Syriac dialect as its liturgical language. It is one of two main liturgical rites of Syriac Christianity, the other being the West Syriac Rite.
The Assyrian homeland, Assyria refers to the homeland of the Assyrian people within which Assyrian civilisation developed, located in their indigenous Upper Mesopotamia. The territory that forms the Assyrian homeland is, similarly to the rest of Mesopotamia, currently divided between present-day Iraq, Turkey, Iran and Syria. In Iran, the Urmia Plain forms a thin margin of the ancestral Assyrian homeland in the north-west, and the only section of the Assyrian homeland beyond the Mesopotamian region. The majority of Assyrians in Iran currently reside in the capital city, Tehran.
The Christians of Iraq are considered to be one of the oldest continuous Christian communities in the world. The vast majority of Iraqi Christians are indigenous Eastern Aramaic-speaking ethnic Assyrians who claim descent from ancient Assyria, and follow the Syriac Christian tradition. Some are also known by the name of their religious denomination as well as their ethnic identity, such as Chaldo-Assyrians, Chaldean Catholics or Syriacs. Non-Assyrian Iraqi Christians are largely Arab Christians and Armenians, and a very small minority of Kurdish, Shabaks and Iraqi Turkmen Christians. Most present-day Iraqi Christians are ethnically, linguistically, historically and genetically distinct from Kurds, Arabs, Iranians, Turks and Turkmens. Regardless of religious affiliation the Eastern Aramaic speaking Christians of Iraq and it's surrounds are one genetically homogeneous people. They identify themselves as being a separate people, of different origins and with a distinct history of their own harking back to ancient Assyria and Mesopotamia. Christian Assyrians also have communities in northeastern Syria, southeastern Turkey, and northwestern Iran as well as in the wider worldwide Assyrian diaspora.
Chaldean Catholics, also known as Chaldeans, Chaldo-Assyrians or Assyro-Chaldeans, are modern Assyrian adherents of the Chaldean Catholic Church, which originates from the historic Church of the East.
Terms for Syriac Christians are endonymic (native) and exonymic (foreign) terms, that are used as designations for Syriac Christians, as adherents of Syriac Christianity. In its widest scope, Syriac Christianity encompass all Christian denominations that follow East Syriac Rite or West Syriac Rite, and thus use Classical Syriac as their main liturgical language. Traditional divisions among Syriac Christians along denominational lines are reflected in the use of various theological and ecclesiological designations, both historical and modern. Specific terms such as: Jacobites, Saint Thomas Syrian Christians, Maronites, Melkites, Nasranis, and Nestorians have been used in reference to distinctive groups and branches of Eastern Christianity, including those of Syriac liturgical and linguistic traditions. Some of those terms are polysemic, and their uses have been a subject of terminological disputes between different communities, and also among scholars.
Assyrian nationalism is a movement of the Assyrian people that advocates for independence or autonomy within the regions they inhabit in northern Iraq, northeastern Syria, northwestern Iran, and southeastern Turkey.
Mar Raphael I Bidawid was the Patriarch of the Chaldean Catholic Church from 1989–2003. He was also a Syriac scholar.
Shimun VIII Yohannan Sulaqa was the first Patriarch of what was to become the Shemʿon line of Chaldean Catholic Church, from 1553 to 1555, after it absorbed this Church of the East patriarchate into full communion with the Holy See and the Catholic Church.
The Oriental Orthodox Churches are Eastern Christian churches adhering to Miaphysite Christology, with approximately 60 million members worldwide. The Oriental Orthodox Churches are part of the Nicene Christian tradition, and represent one of its oldest branches.
The Church of the East 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 Patriarch of the Church of the East is the patriarch, or leader and head bishop of the Church of the East. The position dates to the early centuries of Christianity within the Sassanid Empire, and the Church has been known by a variety of names, including the Church of the East, Nestorian Church, the Persian Church, the Sassanid Church, or East Syrian.
