The Eastern Orthodox Church, officially the Orthodox Catholic Church, and also called the Greek Orthodox Church or simply the Orthodox Church, is the second-largest Christian church, with approximately 230 million baptised members. It operates as a communion of autocephalous churches, each governed by its bishops via local synods. The church has no central doctrinal or governmental authority analogous to the head of the Catholic Church. Nevertheless, the Ecumenical Patriarch of Constantinople is recognised by them as primus inter pares, a title formerly given to the patriarch of Rome. As one of the oldest surviving religious institutions in the world, the Eastern Orthodox Church has played an especially prominent role in the history and culture of Eastern and Southeastern Europe.
Eastern Christianity comprises Christian traditions and church families that originally developed during classical and late antiquity in the Eastern Mediterranean region or locations further east, south or north. The term does not describe a single communion or religious denomination. Eastern Christianity is a category distinguished from Western Christianity, which is composed of those Christian traditions and churches that originally developed further west.
Ecumenism – also called interdenominationalism, or ecumenicalism – is the concept and principle that Christians who belong to different Christian denominations should work together to develop closer relationships among their churches and promote Christian unity. The adjective ecumenical is thus applied to any non-denominational or inter-denominational initiative which encourages greater cooperation and union among Christian denominations and churches. Ecumenical dialogue is a central feature of contemporary ecumenism.
The Orthodox Church of Finland or Finnish Orthodox Church is an autonomous Eastern Orthodox archdiocese of the Ecumenical Patriarchate of Constantinople. The church has a legal position as a national church in the country, along with the Evangelical Lutheran Church of Finland.
Ingria is a historical region in what is now northwestern European Russia. It lies along the southeastern shore of the Gulf of Finland, bordered by Lake Ladoga on the Karelian Isthmus in the north and by the River Narva on the border with Estonia in the west. The earliest known modern inhabitants of the region were indigenous Finnic ethnic groups, primarily the Izhorians and Votians, who were forcibly converted to Eastern Orthodoxy over several centuries during the late Middle Ages. They were later joined by the Ingrian Finns, descendants of 17th century Lutheran Finnish immigrants to the area. At that time, modern Finland proper and Ingria were both part of the Swedish Empire.
Orthodoxy is adherence to correct or accepted creeds, especially in religion. Orthodoxy within Christianity refers to acceptance of the doctrines defined by various creeds and ecumenical councils in Antiquity, but different Churches accept different creeds and councils. Such differences of opinion have developed for numerous reasons, including language and cultural barriers. Eastern Orthodoxy and Oriental Orthodoxy are sometimes referred to simply as "Orthodoxy". In some English-speaking countries, Jews who adhere to all the traditions and commandments as legislated in the Torah are often called Orthodox Jews. Sunni Islam is sometimes referred to as "Orthodox Islam".
A Christian denomination is a distinct religious body within Christianity that comprises all church congregations of the same kind, identifiable by traits such as a name, particular history, organization, leadership, theological doctrine, worship style and, sometimes, a founder. It is a secular and neutral term, generally used to denote any established Christian church. Unlike a cult or sect, a denomination is usually seen as part of the Christian religious mainstream. Most Christian denominations refer to themselves as churches, whereas some newer ones tend to interchangeably use the terms churches, assemblies, fellowships, etc. Divisions between one group and another are defined by authority and doctrine; issues such as the nature of Jesus, the authority of apostolic succession, biblical hermeneutics, theology, ecclesiology, eschatology, and papal primacy may separate one denomination from another. Groups of denominations—often sharing broadly similar beliefs, practices, and historical ties—are sometimes known as "branches of Christianity". These branches differ in many ways, especially through differences in practices and belief.
Votians, also referred to as Votes, Vots and Vods are a Finnic ethnic group native to historical Ingria, the part of modern-day northwestern Russia that is roughly southwest of Saint Petersburg and east of the Estonian border-town of Narva. The Finnic Votic language spoken by Votians is close to extinction. The language is still spoken in three villages of historical Votia and by an unknown number of speakers in the countryside. The villages are Jõgõperä (Krakolye), Liivcülä (Peski), and Luuditsa (Luzhitsy). In the Russian 2020 census, 99 people identified as Votian.
Karelians are a Baltic Finnic ethnic group who are indigenous to the historical region of Karelia, which is today split between Finland and Russia. Karelians living in Russian Karelia are considered a distinct ethnic group closely related to Finnish Karelians, who are considered a subset of Finns. This distinction historically arose from Karelia having been fought over and eventually split between Sweden and Novgorod, resulting in Karelians being under different cultural spheres.
Setos are an indigenous Finnic peoples and linguistic minority that have historically lived in the borderlands between modern day Estonia and Russia. Setos have historically spoken the Seto language and been Orthodox Christians. The Seto language belongs to the Finnic group of the Uralic language family. Since the early 2000s, the Setos have sought greater recognition, rather than having their language considered a dialect of Estonian. Eastern Orthodox Christianity, with influences from local folk religions is widely practiced by the Seto peoples.
The Latvian Orthodox Church is an Eastern Orthodox church in Latvia, part of the wider Eastern Orthodoxy community. The primate of the church carries the title of Metropolitan of Riga and all Latvia. This position has been occupied since October 27, 1990, by metropolitan Aleksandrs Kudrjašovs.
The Chulyms, also Chulym Tatars or Tom Karagas, are a Turkic people in the Tomsk Oblast and Krasnoyarsk Krai in Russia. In 2021, there were 382 Chulyms in Russia.
The Estonian Apostolic Orthodox Church is an Orthodox church in Estonia under the direct jurisdiction of the Ecumenical Patriarch of Constantinople. Under Estonian law it is the legal successor to the pre–World War II Estonian Orthodox Church, which in 1940 had over 210,000 faithful, three bishops, 156 parishes, 131 priests, 19 deacons, two monasteries, and a theological seminary; the majority of the faithful were ethnic Estonians. Its official name is the Orthodox Church of Estonia.
The term Eastern Protestant Christianity encompasses a range of heterogeneous Protestant Christian denominations that developed outside of the Western world, from the latter half of the nineteenth century, and retain certain elements of Eastern Christianity. Some of these denominations came into existence when active Protestant churches adopted reformational variants of Eastern and Oriental Orthodox liturgy and worship, while others originated from Orthodox groups who were inspired by the teachings of Western Protestant missionaries and adopted Protestant beliefs and practices.
Christianity is the predominant religion in Europe. Christianity has been practiced in Europe since the first century, and a number of the Pauline Epistles were addressed to Christians living in Greece, as well as other parts of the Roman Empire.
In 2020, 85.84% of the population in Georgia adhered to Christianity, 11% were Muslim, 0.1% were Jewish, 0.04% were Baháʼí and 3% had no religious beliefs. Other religious groups include Jehovah's Witnesses and Yazidis. Orthodox churches serving other non-Georgian ethnic groups, such as Russians and Greeks, are subordinate to the Georgian Orthodox Church.
Estonia, historically a Lutheran Christian nation, is today one of the least religious countries in the world in terms of declared attitudes, with only 14 percent of the population declaring religion to be an important part of their daily life. This is thought to largely be a result of the Soviet occupation of Estonia in 1940, prior to which Estonia had a large Christian majority - according to the 1922 census, 99.3% of the Estonian population were Christians.
20th century Eastern Orthodox theology has been dominated by neo-Palamism, the revival of St. Palamas and hesychasm. John Behr characterizes Eastern Orthodox theology as having been "reborn in the twentieth century." Norman Russell describes Eastern Orthodox theology as having been dominated by an "arid scholasticism" for several centuries after the fall of Constantinople. Russell describes the postwar re-engagement of modern Greek theologians with the Greek Fathers, which occurred with the help of diaspora theologians and Western patristic scholars. A significant component of this re-engagement with the Greek Fathers has been a rediscovery of Palamas by Greek theologians; Palamas had previously been given less attention than the other Fathers.
