Orthodoxy (from Greek ὀρθοδοξία orthodoxía "right opinion") is adherence to correct or accepted creeds, especially in religion. In the Christian sense the term means "conforming to the Christian faith as represented in the creeds of the early Church." The first seven ecumenical councils were held between the years of 325 and 787 with the aim of formalizing accepted doctrines.
In some English-speaking countries, Jews who adhere to all the traditions and commandments as legislated in the Talmud are often called Orthodox Jews, although the term "orthodox" historically first described Christian beliefs.
The historical Buddha was known to denounce mere attachment to scriptures or dogmatic principles, as it was mentioned in the Kalama Sutta. Moreover, the Theravada school of Buddhism follows strict adherence to the Pāli Canon (tripitaka) and the commentaries such as the Visuddhimagga. Hence, the Theravada school came to be considered the most orthodox of all Buddhist schools, as it is known to be highly conservative especially within the discipline and practice of the Vinaya.
In classical Christian usage, the term orthodox refers to the set of doctrines which were believed by the early Christians. A series of ecumenical councils were held over a period of several centuries to try to formalize these doctrines. The most significant of these early decisions was that between the Homoousian doctrine of Athanasius and Eustathius (which became Trinitarianism) and the Heteroousian doctrine of Arius and Eusebius (called Arianism). The Homoousian doctrine, which defined Jesus as both God and man with the canons of the 431 Council of Ephesus, won out in the Church and was referred to as orthodoxy in most Christian contexts, since this was the viewpoint of previous Christian Church Fathers and was reaffirmed at these councils. (The minority of nontrinitarian Christians object to this terminology).
Following the 1054 Great Schism, both the Western Church and Eastern Church continued to consider themselves uniquely orthodox and catholic. Augustine wrote in On True Religion: “Religion is to be sought . . . only among those who are called Catholic or orthodox Christians, that is, guardians of truth and followers of right.”  Over time, the Western Church gradually identified with the "Catholic" label, and people of Western Europe gradually associated the "Orthodox" label with the Eastern Church (in some languages the "Catholic" label is not necessarily identified with the Western Church). This was in note of the fact that both Catholic and Orthodox were in use as ecclesiastical adjectives as early as the 2nd and 4th centuries respectively.
Much earlier, Oriental Orthodoxy had split from Chalcedonian Christianity after the Council of Chalcedon (AD 451), because of several christological differences. Since then, Oriental Orthodox Churches are maintaining the orthodox designation as a symbol of their theological traditions.
Sunni Islam is sometimes referred to as "orthodox Islam". As of 2009, Sunni Muslims constituted 87–90% of the world's Muslim population. However, other scholars of Islam, such as John Burton believe that there is no such thing as "orthodox Islam".
Orthodox Judaism is a collective term for the traditionalist branches of Judaism, which seek to fully maintain the received Jewish beliefs and observances and which coalesced in opposition to the various challenges of modernity and secularization. Theologically, it is chiefly defined by regarding the Torah, both Written and Oral, as literally revealed by God on biblical Mount Sinai and faithfully transmitted ever since. The movement advocates a strict observance of halakha (Jewish Law), which is to be interpreted only according to received methods due to its divine character. Orthodoxy considers halakha as eternal and beyond historical influence, being applied differently to changing circumstances but basically unchangeable in itself.
Orthodox Judaism is not a centralized denomination. Relations between its different subgroups are sometimes strained and the exact limits of Orthodoxy are subject to intense debate. Very roughly, it may be divided between Haredi Judaism, which is more conservative and reclusive, and Modern Orthodox Judaism, which is relatively open to outer society. Each of those is itself formed of independent streams. They are almost uniformly exclusionist, regarding Orthodoxy as the only authentic form of Judaism and rejecting all non-Orthodox interpretations as illegitimate.
Kemetic Orthodoxy is a Kemetic denomination, which is a reform reconstruction of Egyptian polytheism for modern followers. It claims to derive a spiritual lineage from the Ancient Egyptian religion.
There are organizations of Slavic Native Faith (Rodnovery) which characterize the religion as Orthodoxy (Russian: Pravoslavie), and by other terms.
Orthodoxy is opposed to heterodoxy ("other teaching") or heresy. People who deviate from orthodoxy by professing a doctrine considered to be false are called heretics, while those who, perhaps without professing heretical beliefs, break from the perceived main body of believers are called schismatics. The term employed sometimes depends on the aspect most in view: if one is addressing corporate unity, the emphasis may be on schism; if one is addressing doctrinal coherence, the emphasis may be on heresy. A deviation lighter than heresy is commonly called error, in the sense of not being grave enough to cause total estrangement, while yet seriously affecting communion. Sometimes error is also used to cover both full heresies and minor errors.
The concept of orthodoxy is prevalent in many forms of organized monotheism. However, orthodox belief is not usually overly emphasized in polytheistic or animist religions, in which there is often little or no concept of dogma, and varied interpretations of doctrine and theology are tolerated and sometimes even encouraged within certain contexts. Syncretism, for example, plays a much wider role in non-monotheistic (and particularly, non-scriptural) religion. The prevailing governing norm within polytheism is often orthopraxy ("right practice") rather than the "right belief" of orthodoxy.
Outside the context of religion, the term "orthodoxy" is often used to refer to any commonly held belief or set of beliefs in some field, in particular when these tenets, possibly referred to as "dogmas", are being challenged. In this sense, the term has a mildly pejorative connotation.
Among various "orthodoxies" in distinctive fields, the most commonly used terms are:
The terms "orthodox" and "orthodoxy" are also used more broadly to refer to things other than ideas and beliefs. A new and unusual way of solving a problem could be referred to as "unorthodox", while a common and 'normal' way of solving a problem would be referred to as "orthodox".
Chalcedonian Christianity refers to the Christian denominations adhering to the christological definitions and ecclesiological resolutions of the Council of Chalcedon, the Fourth Ecumenical Council held in 451. Chalcedonian Christians follow the Definition of Chalcedon, a religious doctrine concerning the divine and human natures of Jesus Christ. The great majority of Christian communions and confessions in the 21st century are Chalcedonian, but from the 5th to the 8th centuries the ascendancy of Chalcedonian Christology (detailed below) was not always certain.
Doctrinally, Chalcedonianism may be regarded as a subset of Nicene Christianity.Coptic Orthodox Church of Alexandria
The Coptic Orthodox Church of Alexandria (Coptic: Ϯⲉⲕ̀ⲕⲗⲏⲥⲓⲁ ̀ⲛⲣⲉⲙ̀ⲛⲭⲏⲙⲓ ⲛⲟⲣⲑⲟⲇⲟⲝⲟⲥ, romanized: ti.eklyseya en.remenkimi en.orthodoxos, lit. 'The Egyptian Orthodox Church') is an Oriental Orthodox Christian church based in Egypt, Africa and the Middle East. The head of the Church and the See of Alexandria is the Patriarch of Alexandria on the Holy See of Saint Mark, who also carries the title of Coptic Pope. The See of Alexandria is titular, and today the Coptic Pope presides from Saint Mark's Coptic Orthodox Cathedral in the Abbassia District in Cairo. The church follows the Alexandrian Rite for its liturgy, prayer and devotional patrimony. With 18–22 million members worldwide, whereof about 15 to 20 million are in Egypt, it is the country's largest Christian church.
According to its tradition, the Coptic Church was established by Saint Mark, an apostle and evangelist, during the middle of the 1st century (c. AD 42). Due to disputes concerning the nature of Christ, it split from the rest of the Christendom after the Council of Chalcedon in AD 451, resulting in a rivalry with the Byzantine Orthodox Church. In the 4–7th centuries the Coptic Church gradually expanded due to the Christianization of the Aksumite empire and of two of the three Nubian kingdoms, Nobatia and Alodia, while the third Nubian kingdom, Makuria, recognized the Coptic patriarch after initially being aligned to the Byzantine Orthodox Church.
After AD 639 Egypt was ruled by its Islamic conquerors from Arabia, and the treatment of the Coptic Christians ranged from tolerance to open persecution. In the 12th century, the church relocated its seat from Alexandria to Cairo. The same century also saw the Copts become a religious minority. During the 14th and 15th centuries, Nubian Christianity was supplanted by Islam.
In 1959, the Ethiopian Orthodox Tewahedo Church was granted autocephaly or independence. This was extended to the Eritrean Orthodox Tewahedo Church in 1998 following the successful Eritrean War of Independence from Ethiopia.
Since the Arab Spring in 2011, the Copts have been suffering increased religious discrimination and violence.Czech and Slovak Orthodox Church
The Orthodox Church of the Czech Lands and Slovakia is a self-governing body of the Eastern Orthodox Church that territorially covers the countries of the Czech Republic and Slovakia. Archbishop Rastislav of Prešov was elected by the Extraordinary Synod held on January 11, 2014, as the new primate. On December 9, 2013, the Synod removed Archbishop Simeon of Olomouc and Brno from his position as Locum Tenens (ad interim administrator following the resignation of the previous primate, Archbishop Krystof, over allegations of sexual relations with women), and appointed Archbishop Rastislav in his place, an action against which Archbishop Simeon protested and which was deplored by Patriarch Bartholomew I of Constantinople.Eastern Orthodox Church
The Eastern Orthodox Church, officially the Orthodox Catholic Church, is the second-largest Christian church, with approximately 200–260 million baptised members. It operates as a communion of autocephalous churches, each governed by its bishops in local synods, although roughly half of Eastern Orthodox Christians live in Russia. The church has no central doctrinal or governmental authority analogous to the Bishop of Rome, but the Ecumenical Patriarch of Constantinople is recognised by all as primus inter pares ("first among equals") of the bishops. As one of the oldest surviving religious institutions in the world, the Eastern Orthodox Church has played a prominent role in the history and culture of Eastern and Southeastern Europe, the Caucasus, and the Near East.Eastern Orthodox theology is based on the Nicene-Constantinopolitan Creed (known simply as the Nicene Creed). The church teaches that it is the One, Holy, Catholic and Apostolic church established by Jesus Christ in his Great Commission, and that its bishops are the successors of Christ's apostles. It maintains that it practices the original Christian faith, as passed down by holy tradition. Its patriarchates, reminiscent of the pentarchy, and autocephalous and autonomous churches reflect a variety of hierarchical organisation. Of its innumerable sacred mysteries, it recognises seven major sacraments, of which the Eucharist is the principal one, celebrated liturgically in synaxis. The church teaches that through consecration invoked by a priest, the sacrificial bread and wine become the body and blood of Christ. The Virgin Mary is venerated in the Eastern Orthodox Church as the God-bearer, honoured in devotions.
The Eastern Orthodox Church shared communion with the Roman Catholic Church until the East–West Schism in 1054, triggered by disputes over doctrine, especially the authority of the Pope. Before the Council of Ephesus in AD 431 the Church of the East also shared in this communion, as did the Oriental Orthodox churches before the Council of Chalcedon in AD 451, all separating primarily over differences in Christology.
The majority of Eastern Orthodox Christians live mainly in Southeast and Eastern Europe, Cyprus, Georgia and other communities in the Caucasus region, and communities in Siberia reaching the Russian Far East. There are also smaller communities in the former Byzantine regions of Africa, the Eastern Mediterranean, and in the Middle East where it is decreasing due to forced migration because of increased religious persecution in recent years. There are also many in other parts of the world, formed through diaspora, conversions, and missionary activity.Ethiopian Orthodox Tewahedo Church
The Ethiopian Orthodox Tewahedo Church (Amharic: የኢትዮጵያ:ኦርቶዶክስ:ተዋሕዶ:ቤተ:ክርስቲያን; Yäityop'ya ortodoks täwahedo bétäkrestyan) is the largest of the Oriental Orthodox Christian churches. One of the few pre-colonial Christian churches in Sub-Saharan Africa, the Ethiopian Orthodox Tewahedo Church has a membership of between 45 and 50 million people, the majority of whom live in Ethiopia. It is a founding member of the World Council of Churches. The Ethiopian Orthodox Tewahedo Church is in communion with the Coptic Orthodox Church of Alexandria, having gained autocephaly in 1959.
The Ethiopian Orthodox Tewahedo Church was administratively part of the Coptic Orthodox Church of Alexandria from the first half of the 4th century until 1959, when it was granted its own patriarch by Cyril VI, Pope of the Coptic Orthodox Church of Alexandria. It is one of the oldest Christian churches and, as a non-Chalcedonian church, it is not in full communion with the Ethiopian Catholic Church. Ethiopia is the second country historically, following only Armenia, to have officially proclaimed Christianity as state religion (in AD 333).
Tewahedo (Ge'ez ተዋሕዶ) is a Ge'ez word meaning "being made one". This word refers to the Oriental Orthodox belief in the one perfectly unified nature of Christ; i.e., a complete union of the divine and human natures into one nature is self-evident in order to accomplish the divine salvation of humankind, as opposed to the "two natures of Christ" belief commonly held by the Roman Catholic and Eastern Orthodox, Anglican, Lutheran and most Protestant churches. The Oriental Orthodox churches adhere to a Miaphysitic Christological view followed by Cyril of Alexandria, the leading protagonist in the Christological debates of the 4th and 5th centuries, who advocated "mia physis tou theou logou sesarkōmenē", or "one (mia) nature of the Word of God incarnate" (μία φύσις τοῦ θεοῦ λόγου σεσαρκωμένη) and a "union according to hypostasis" (ἕνωσις καθ' ὑπόστασιν henōsis kath' hypostasin), or hypostatic union. The distinction of this stance was that the incarnate Christ has one nature, but that one nature is of the two natures, divine and human, and retains all the characteristics of both after the union.
Miaphysitism holds that in the one person of Jesus Christ, divinity and humanity are united in one (μία, mia - "united") nature (φύσις - "physis") without separation, without confusion, without alteration and without mixing where Christ is consubstantial with God the Father. Around 500 bishops within the Patriarchates of Alexandria, Antioch and Jerusalem refused to accept the dyophysitism (two natures) doctrine decreed by the Council of Chalcedon in 451, an incident that resulted in the first major split in the main body of the Christian Church.Greek Orthodox Church
The name Greek Orthodox Church (Greek: Ἑλληνορθόδοξη Ἑκκλησία, Ellinorthódoxi Ekklisía, IPA: [elinorˈθoðoksi ekliˈsia]), or Greek Orthodoxy, is a term referring to the body of several Churches within the larger communion of Eastern Orthodox Christianity, whose liturgy is or was traditionally conducted in Koine Greek, the original language of the Septuagint and the New Testament, and whose history, traditions, and theology are rooted in the early Church Fathers and the culture of the Byzantine Empire. Greek Orthodox Christianity has also traditionally placed heavy emphasis and awarded high prestige to traditions of Eastern Orthodox monasticism and asceticism, with origins in Early Christianity in the Near East and in Byzantine Anatolia.
Historically, the term "Greek Orthodox" has also been used to describe all Eastern Orthodox Churches in general, since "Greek" in "Greek Orthodox" can refer to the heritage of the Byzantine Empire. During the first eight centuries of Christian history, most major intellectual, cultural, and social developments in the Christian Church took place within the Empire or in the sphere of its influence, where the Greek language was widely spoken and used for most theological writings. Over time, most parts of the liturgy, traditions, and practices of the church of Constantinople were adopted by all, and still provide the basic patterns of contemporary Orthodoxy. Thus, the Eastern Church came to be called "Greek" Orthodox in the same way that the Western Church is called "Roman" Catholic. However, the appellation "Greek" was abandoned by the Slavic and other Eastern Orthodox churches in connection with their peoples' national awakenings, from as early as the 10th century A.D. Thus, today it is generally only those churches that are most closely tied to Greek or Byzantine culture that are called "Greek Orthodox".Greek Orthodox Church of Alexandria
The Greek Orthodox Patriarchate of Alexandria and all Africa (Ancient Greek: Πατριαρχεῖον Ἀλεξανδρείας καὶ πάσης Ἀφρικῆς, romanized: Patriarcheîon Alexandreías kaì pásēs Aphrikês, 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, which is part of Oriental Orthodoxy. 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.Greek Orthodox Church of Antioch
The Greek Orthodox Church of Antioch, also known as the Antiochian Orthodox Church (Greek: Πατριαρχεῖον Ἀντιοχείας, romanized: Patriarcheĩon Antiokheías, lit. 'Patriarchate of Antioch'; Arabic: بطريركية أنطاكية وسائر المشرق للروم الأرثوذكس, romanized: Baṭriyarkiyya Anṭākiya wa-Sāʾir al-Mashriq li'l-Rūm al-Urthūdhuks, lit. 'Roman Orthodox Patriarchate of Antioch and All the East'), is an autocephalous Greek Orthodox Church within the wider communion of Eastern Orthodox Christianity. Headed by the Greek Orthodox Patriarch of Antioch, it considers itself the successor to the Christian community founded in Antioch by the Apostles Peter and Paul.History of Oriental Orthodoxy
Oriental Orthodoxy is the communion of Eastern Christian Churches that recognize only three ecumenical councils — the First Council of Nicaea, the First Council of Constantinople and the Council of Ephesus. They reject the dogmatic definitions of the Council of Chalcedon. Hence, these Churches are also called Old Oriental Churches or Non-Chalcedonian Churches.Lutheran orthodoxy
Lutheran orthodoxy was an era in the history of Lutheranism, which began in 1580 from the writing of the Book of Concord and ended at the Age of Enlightenment. Lutheran orthodoxy was paralleled by similar eras in Calvinism and tridentine Roman Catholicism after the Counter-Reformation.Metropolis (religious jurisdiction)
A metropolis religious jurisdiction, or a metropolitan archdiocese, is an episcopal see whose bishop is the metropolitan bishop of an ecclesiastical province. Metropolises, historically, have been important cities in their provinces.Modern Orthodox Judaism
Modern Orthodox Judaism (also Modern Orthodox or Modern Orthodoxy) is a movement within Orthodox Judaism that attempts to synthesize Jewish values and the observance of Jewish law with the secular, modern world.
Modern Orthodoxy draws on several teachings and philosophies, and thus assumes various forms. In the United States, and generally in the Western world, Centrist Orthodoxy underpinned by the philosophy of Torah Umadda ("Torah and Scientific Knowledge") is prevalent. In Israel, Modern Orthodoxy is dominated by Religious Zionism; however, although not identical, these movements share many of the same values and many of the same adherents.Oriental Orthodoxy
Oriental Orthodoxy is the communion of Christian Churches that adheres to Miaphysite Christology and theology, with 60 to 70 million members worldwide. As one of the oldest religious institutions in the world, it has played a prominent role in the history and culture of Armenia, Egypt, Eritrea, Ethiopia, Sudan and parts of the Middle East and India. An Eastern Christian communion of autocephalous churches, its bishops are equal by virtue of episcopal ordination, and its doctrines can be summarised in that the communion recognizes the validity of only the first three ecumenical councils.The Oriental Orthodox communion is composed of six autocephalous churches: the Coptic Orthodox Church of Alexandria, the Syriac Orthodox Church of Antioch, the Armenian Apostolic Church, the Ethiopian Orthodox Tewahedo Church, the Eritrean Orthodox Tewahedo Church, and the Malankara Orthodox Syrian Church. Collectively, they consider themselves to be the One, Holy, Catholic, and Apostolic church founded by Jesus Christ in his Great Commission, and that its bishops are the successors of Christ's apostles. Most member churches are part of the World Council of Churches. All member churches share a virtually identical theology, with the distinguishing feature being Miaphysitism. Three very different rites are practiced in the communion: the western-influenced Armenian Rite, the West Syrian Rite of the two Syriac churches, and the Alexandrian Rite of the Copts, Ethiopians and Eritreans.
At the Council of Chalcedon in 451 AD, the Oriental Orthodox churches separated from the Imperial Roman Church, primarily over differences in Christology. Oriental Orthodoxy developed distinctively under the Patriarchate of Alexandria in Egypt, originally part of the Pentarchy, and the only episcopal see besides the Holy See to maintain the title "Pope". The majority of Oriental Orthodox Christians live in Egypt, Ethiopia, Eritrea, and Armenia, with smaller Syriac communities living in the Middle East — decreasing due to persecution — and India. There are also many in other parts of the world, formed through diaspora, conversions, and missionary activity.Orthodox Judaism
Orthodox Judaism is a collective term for the traditionalist branches of contemporary Judaism. Theologically, it is chiefly defined by regarding the Torah, both Written and Oral, as literally revealed by God on Mount Sinai and faithfully transmitted ever since. Orthodox Judaism therefore advocates a strict observance of Jewish Law, or Halakha, which is to be interpreted and determined only according to traditional methods and in adherence to the continuum of received precedent through the ages. It regards the entire halakhic system as ultimately grounded in immutable revelation, essentially beyond external and historical influence. More than any theoretical issue, obeying the dietary, purity, ethical, and other laws of Halakha is the hallmark of Orthodoxy. Other key doctrines include belief in a future resurrection of the dead, divine reward and punishment for the righteous and the sinners, the Election of Israel, and an eventual restoration of the Temple in Jerusalem under the Messiah.
Orthodox Judaism is not a centralized denomination. Relations between its different subgroups are sometimes strained, and the exact limits of Orthodoxy are subject to intense debate. Very roughly, it may be divided between Ultra-Orthodox or "Haredi", which is more conservative and reclusive, and Modern Orthodox Judaism which is relatively open to outer society. Each of those is itself formed of independent streams. They are almost uniformly exclusionist, regarding Orthodoxy as the only authentic form of Judaism and rejecting all competing non-Orthodox philosophies as illegitimate. While adhering to traditional beliefs, the movement is a modern phenomenon. It arose as a result of the breakdown of the autonomous Jewish community since the 18th century, and was much shaped by a conscious struggle against the pressures of secularization and rival alternatives. The strictly observant and theologically aware Orthodox are a definite minority among all Jews, but there are also numerous semi- and non-practicing persons who are officially affiliated or personally identifying with the movement. In total, Orthodox Judaism is the largest Jewish religious group, estimated to have over 2 million practicing adherents and at least an equal number of nominal members or self-identifying supporters.Patriarch
The highest-ranking bishops in Eastern Orthodoxy, Oriental Orthodoxy, the Catholic Church (above major archbishop and primate), and the Church of the East are termed patriarchs (and in certain cases also popes).
The word is derived from Greek πατριάρχης (patriarchēs), meaning "chief or father of a family", a compound of πατριά (patria), meaning "family", and ἄρχειν (archein), meaning "to rule".Originally, a patriarch was a man who exercised autocratic authority as a pater familias over an extended family. The system of such rule of families by senior males is termed patriarchy. Historically, a patriarch has often been the logical choice to act as ethnarch of the community identified with his religious confession within a state or empire of a different creed (such as Christians within the Ottoman Empire). The term developed an ecclesiastical meaning, within the Christian Church. The office and the ecclesiastical circumscription of a Christian patriarch is termed a patriarchate.
Abraham, Isaac, and Jacob are referred to as the three patriarchs of the people of Israel, and the period during which they lived is termed the Patriarchal Age. The word patriarch originally acquired its religious meaning in the Septuagint version of the Bible.Romanian Orthodox Church
The Romanian Orthodox Church (Romanian: Biserica Ortodoxă Română) is an autocephalous Orthodox Church in full communion with other Eastern Orthodox Christian Churches, one of the nine Patriarchates in the Eastern Orthodox Church. Since 1925, the Church's Primate bears the title of Patriarch. Its jurisdiction covers the territories of Romania and Moldova, with additional dioceses for Romanians living in nearby Serbia and Hungary, as well as for diaspora communities in Central and Western Europe, North America and Oceania.
Currently it is the only autocephalous Church within Orthodoxy to have a Romance language for liturgical use. The majority of Romania's population (16,367,267, or 85.9% of those for whom data were available, according to the 2011 census data), as well as some 720,000 Moldovans, belong to the Romanian Orthodox Church.
Members of the Romanian Orthodox Church sometimes refer to Orthodox Christian doctrine as Dreapta credință ("right/correct belief" or "true faith"; compare to Greek ὀρθὴ δόξα, "straight/correct belief").Russian Orthodox Church
The Russian Orthodox Church (ROC; Russian: Ру́сская правосла́вная це́рковь, tr. Rússkaya pravoslávnaya tsérkov), alternatively legally known as the Moscow Patriarchate (Russian: Моско́вский патриарха́т, tr. Moskóvskiy patriarkhát), is one of the autocephalous Eastern Orthodox Christian churches. The Primate of the ROC is the Patriarch of Moscow and all Rus'. The ROC, as well as the primate thereof, officially ranks fifth in the Orthodox order of precedence, immediately below the four ancient patriarchates of the Greek Orthodox Church, those of Constantinople, Alexandria, Antioch, and Jerusalem. Since 15 October 2018, the ROC is not in communion with the Ecumenical Patriarch of Constantinople, having unilaterally severed ties in reaction to the establishment of the Orthodox Church of Ukraine, which was finalised by the Ecumenical Patriarchate on 5 January 2019.
The Christianization of Kievan Rus', widely seen as the birth of the ROC, is believed to have occurred in 988 through the baptism of the Kievan prince Vladimir and his people by the clergy of the Ecumenical Patriarchate, whose constituent part the ROC remained for the next six centuries, while the Kievan see remained in the jurisdiction of the Ecumenical Patriarchate until 1686.
The ROC currently claims its exclusive jurisdiction over the Orthodox Christians, irrespective of their ethnic background, who reside in the former member republics of the Soviet Union, excluding Georgia and Armenia, although this claim is disputed in such countries as Estonia, Moldova and Ukraine and consequently parallel canonical Orthodox jurisdictions exist in those: the Estonian Apostolic Orthodox Church, the Metropolis of Bessarabia, and the Orthodox Church of Ukraine, respectively. It also exercises ecclesiastical jurisdiction over the autonomous Church of Japan and the Orthodox Christians resident in the People's Republic of China. The ROC branches in Belarus, Estonia, Latvia, Moldova and Ukraine since the 1990s enjoy various degrees of self-government, albeit short of the status of formal ecclesiastical autonomy.
The ROC should not be confused with the Orthodox Church in America (OCA), another autocephalous Orthodox church (since 1970, albeit not universally recognised in this status and viewed by the Ecumenical Patriarchate as a branch of the ROC), that traces its existence in North America to the time of the Russian missionaries in Alaska (then part of the Russian Empire) in the late 18th century. The ROC should also not be confused with the Russian Orthodox Church Outside Russia (also known as the Russian Orthodox Church Abroad, or ROCOR), headquartered in the United States. The ROCOR was instituted in the 1920s by Russian communities outside then Communist Russia, which refused to recognize the authority of the Moscow Patriarchate then de facto headed by Metropolitan Sergius Stragorodsky. The two churches reconciled on May 17, 2007; the ROCOR is now a self-governing part of the Russian Orthodox Church.Sunni Islam
Sunni Islam () is the largest denomination of Islam, followed by 85–90% of the world's Muslims. Its name comes from the word sunnah, referring to the behaviour of the Islamic prophet Muhammad. The differences between Sunni and Shia Muslims arose from a disagreement over the succession to Muhammad and subsequently acquired broader political significance, as well as theological and juridical dimensions.According to Sunni traditions, Muhammad did not clearly designate a successor and the Muslim community acted according to his sunnah in electing his father-in-law Abu Bakr as the first caliph. This contrasts with the Shia view, which holds that Muhammad announced his son-in-law and cousin Ali ibn Abi Talib as his successor, most notably at Ghadir Khumm. Political tensions between Sunnis and Shias continued with varying intensity throughout Islamic history and have been exacerbated in recent times by ethnic conflicts and the rise of Wahhabism.The adherents of Sunni Islam are referred to in Arabic as ahl as-sunnah wa l-jamāʻah ("the people of the sunnah and the community") or ahl as-sunnah for short. In English, its doctrines and practices are sometimes called Sunnism, while adherents are known as Sunni Muslims, Sunnis, Sunnites and Ahlus Sunnah. Sunni Islam is sometimes referred to as "orthodox Islam", though some scholars view this translation as inappropriate.The Quran, together with hadith (especially those collected in Kutub al-Sittah) and binding juristic consensus, form the basis of all traditional jurisprudence within Sunni Islam. Sharia rulings are derived from these basic sources, in conjunction with analogical reasoning, consideration of public welfare and juristic discretion, using the principles of jurisprudence developed by the traditional legal schools.
In matters of creed, the Sunni tradition upholds the six pillars of iman (faith) and comprises the Ash'ari and Maturidi schools of rationalistic theology as well as the textualist school known as traditionalist theology.