Patriarchate in the context of "Christianity in the 4th century"

The Greek Orthodox Patriarchate of Alexandria and all Africa (Ancient Greek: Πατριαρχεῖον Ἀλεξανδρείας καὶ πάσης Ἀφρικῆς, romanized: Patriarkheîon Alexandreías ke pásīs Afrikês, lit. 'The Patriarchate of Alexandria and all Africa'), also known as the Greek Orthodox Church of Alexandria, is an autocephalous patriarchate that is part of the Eastern Orthodox Church. Its seat is in Alexandria, and it has canonical responsibility for the entire African continent.

It is commonly called the Greek or Eastern Orthodox Patriarchate of Alexandria to distinguish it from the Coptic Orthodox Patriarchate of Alexandria. Members of the Greek Orthodox Patriarchate were once referred to as "Melkites" by non-Chalcedonian Christians because they remained in communion with the Ecumenical Patriarchate of Constantinople after the schism that followed the Council of Chalcedon in 451. Mark the Evangelist is considered the founder of the See, and the Patriarchate's emblem is the Lion of Saint Mark.

The Greek Orthodox Patriarchate of Jerusalem, also known as the Greek Orthodox Church of Jerusalem, is an autocephalous church within the wider communion of Eastern Orthodox Christianity. Established in the mid-fifth century as one of the oldest patriarchates in Christendom, it is headquartered in the Church of the Holy Sepulchre in Jerusalem and led by the patriarch of Jerusalem, currently Theophilos III. The patriarchate's ecclesiastical jurisdiction includes roughly 200,000 to 500,000 Orthodox Christians across the Holy Land in Palestine, Jordan and Israel.

The church traces its foundation in Jerusalem to the day of Pentecost, when the Holy Spirit, according to Christian beliefs, descended on the disciples of Jesus Christ and ushered the spread of the Gospel. The church celebrates its liturgy in the ancient Byzantine Rite – whose sacred language, Koine Greek, is the original language of the New Testament – and follows its own liturgical year under the Julian calendar.

Serbian Patriarchate of Peć (Serbian: Српска патријаршија у Пећи, Srpska patrijaršija u Peći), or simply Peć Patriarchate (Serbian: Пећка патријаршија, Pećka patrijaršija), was an autocephalous Eastern Orthodox Patriarchate that existed from 1346 to 1463, and then again from 1557 to 1766 with its seat in the Patriarchal Monastery of Peć. It had ecclesiastical jurisdiction over Eastern Orthodox Christians in Serbian Lands and other western regions of Southeastern Europe. Primates of the Patriarchate were styled Archbishop of Peć and Serbian Patriarch.

Simeon I the Great (Church Slavonic: цѣсар҄ь Сѷмеѡ́нъ А҃ Вели́къ; Bulgarian: цар Симеон I Велики, romanized: Simeon I Veliki [simɛˈɔn ˈpɤrvi vɛˈliki]; Greek: Συμεών Αʹ ὁ Μέγας, romanized: Sumeṓn prôtos ho Mégas) ruled over Bulgaria from 893 to 927, during the First Bulgarian Empire. Simeon's successful campaigns against the Byzantines, Magyars and Serbs led Bulgaria to its greatest territorial expansion ever, making it the most powerful state in contemporary Eastern and Southeast Europe. His reign was also a period of unmatched cultural prosperity and enlightenment later deemed the Golden Age of Bulgarian culture.

During Simeon's rule, Bulgaria spread over a territory between the Aegean, the Adriatic and the Black seas. The newly independent Bulgarian Orthodox Church became the first new patriarchate besides the Pentarchy, and Bulgarian Glagolitic and Cyrillic translations of Christian texts spread all over the Slavic world of the time. It was at the Preslav Literary School in the 890s that the Cyrillic alphabet was developed. Halfway through his reign, Simeon assumed the title of "emperor" (Tsar), having prior to that been styled "prince" (Knyaz).

The Bulgarian Orthodox Church (Bulgarian: Българска православна църква, romanized: Bûlgarska pravoslavna cûrkva), legally the Patriarchate of Bulgaria (Bulgarian: Българска патриаршия, romanized: Bûlgarska patriarshiya), is an autocephalous Eastern Orthodox jurisdiction based in Bulgaria. It is the first medieval recognised patriarchate outside the Pentarchy and the oldest Slavic Orthodox church, with some 6 million members in Bulgaria and between 1.5 and 2 million members in a number of other European countries, Asia, the Americas, Australia, and New Zealand. It was recognized as autocephalous in 1945 by the Ecumenical Patriarchate of Constantinople.

The Patriarch of Moscow and all Rus' (Russian: Патриарх Московский и всея Руси, romanized: Patriarkh Moskovskiy i vseya Rusi), also known as the Patriarch of Moscow and all Russia, is the title of the primate of the Russian Orthodox Church (ROC). It is often preceded by the honorific "His Holiness". As the ordinary of the diocese of Moscow, the office holder's direct canonical remit extends only to Moscow; however, as the patriarch, the office holder has a number of church-wide administrative powers as laid down by the charter of the ROC.

The patriarchate was established in 1589 when the status of the Russian metropolitan was elevated, with Job becoming the first patriarch. The patriarchate was abolished in 1721 by Peter the Great and replaced with the Most Holy Synod as the supreme governing body of the ROC, before being restored on 10 November [O.S. 28 October] 1917, by decision of the All-Russian Local Council. The current patriarch is Kirill, who acceded to the position in 2009.

The Church of the East (Classical Syriac: 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, the Chaldean Church or the Nestorian Church, is one of three major branches of Eastern Nicene Christianity that arose from the Christological controversies in the 5th century and the 6th century, alongside that of Miaphysitism (which came to be known as the Oriental Orthodox Churches) and Chalcedonian Christianity (from which Catholicism, Eastern Orthodoxy and Protestantism would arise).

Having its origins in Mesopotamia during the time of the Parthian Empire, the Church of the East developed its own unique form of Christian theology and liturgy. During the early modern period, a series of schisms gave rise to rival patriarchates, sometimes two, sometimes three. In the latter half of the 20th century, the traditionalist patriarchate of the church underwent a split into two rival patriarchates, namely the Assyrian Church of the East and the Ancient Church of the East, which continue to follow the traditional theology and liturgy of the mother church. The Chaldean Catholic Church based in Iraq and the Syro-Malabar Church in India are two Eastern Catholic churches which also claim the heritage of the Church of the East.

Our Lady of Kazan, also called Mother of God of Kazan (Russian: Казанская Богоматерь, romanized: Kazanskaya Bogomater'), is a holy icon of the highest stature within the Russian Orthodox Church, representing the Virgin Mary as the protector and patroness of the city of Kazan, and a palladium of all of Russia and Rus', known as the Holy Protectress of Russia. As is the case for any holy entity under a Patriarchate in communion within the greater Eastern Orthodox Church, it is venerated by all Orthodox faithful.

According to legend, the icon was originally acquired from Constantinople, lost in 1438, and miraculously recovered in pristine state over 140 years later in 1579. Two major cathedrals, the Kazan Cathedral, Moscow, and the Kazan Cathedral, St. Petersburg, are consecrated to Our Lady of Kazan, and they display copies of the icon, as do numerous churches throughout the land. The original icon in Kazan was stolen, and probably destroyed, in 1904.