Orthodox Church

Orthodox Church
Name	Orthodox Church
Main classification	Eastern Christianity
Orientation	Orthodox
Theology	Eastern Orthodox theology
Polity	Episcopal
Leader title	Primates
Founded date	1st century
Founded place	Jerusalem, Antioch, Constantinople
Separations	Roman Catholic Church, Oriental Orthodox Churches
Area	Worldwide
Language	Koine Greek, Church Slavonic, Arabic, Georgian, Romanian, English, others
Headquarters	Various autocephalous sees (e.g., Ecumenical Patriarchate of Constantinople, Moscow Patriarchate)

Orthodox Church The Orthodox Church refers to the family of Eastern Christian communities tracing apostolic succession to Apostle Peter, Apostle Paul, Apostle John, and other early figures, centered historically in Constantinople, Antioch, Alexandria, Jerusalem, and Rome. It preserves liturgical traditions such as the Divine Liturgy of St. John Chrysostom and the theology shaped by councils including the First Council of Nicaea and the Council of Chalcedon. Major historical actors include Emperor Justinian I, Patriarch Photios I of Constantinople, and movements like the Byzantine Empire and the Philokalia tradition.

History

The history begins with apostolic missions recorded in Acts of the Apostles and the ministry of figures like Apostle Andrew and Apostle James the Just, developing through the First Council of Nicaea (325) and the First Council of Constantinople (381). Schisms and doctrinal disputes produced events such as the Council of Ephesus (431), the Council of Chalcedon (451), and later the East–West Schism (1054) involving leaders like Pope Leo IX and Patriarch Michael I Cerularius. The medieval era saw interactions with the Byzantine Empire, encounters with the Ottoman Empire, and missionary expansion to Kievan Rus' under Prince Vladimir the Great. The modern period includes autocephaly movements in Greece, Romania, Bulgaria, and the rise of the Russian Orthodox Church after the Moscow Council (1917–1918), as well as 20th–21st century dialogues with Ecumenical movement participants and events like the Pan-Orthodox Council (2016).

Theology and Doctrine

Doctrine rests on the Nicene Creed established at First Council of Nicaea and revised at First Council of Constantinople, interpreted through the works of St. Athanasius of Alexandria, St. Basil the Great, St. Gregory of Nazianzus, and St. John Chrysostom. Central themes include theosis as articulated by St. Gregory Palamas, sacramental theology expressed in the Mysteries of the Church (especially the Eucharist), and Christology shaped against Nestorianism and Monophysitism at councils like Council of Chalcedon. Patristic sources such as the Philokalia and the writings of Maximus the Confessor inform spiritual practice and dogma, while canon law traditions reference the Canons of the Apostles and later synodal collections like the Nomocanon.

Liturgy and Worship

Worship centers on the Divine Liturgy forms attributed to St. John Chrysostom, St. Basil the Great, and the Liturgy of the Presanctified Gifts. Liturgical life includes the Eastern Orthodox calendar, the cycle of Pascha, Great Lent, and feasts of saints such as St. Nicholas. Musical traditions vary from Byzantine chant tied to Hesychasm spirituality to Slavic choral styles introduced by Saints Cyril and Methodius. Architecture and sacred art employ the Iconostasis, iconography following canons developed in the Seventh Ecumenical Council era and debated in periods like the Iconoclasm controversies.

Organization and Hierarchy

The church is structured episcopally with bishops, priests, and deacons; major ranks include Metropolitan, Archbishop, and Patriarch. Autocephalous and autonomous entities such as the Ecumenical Patriarchate of Constantinople, Moscow Patriarchate, Serbian Orthodox Church, Greek Orthodox Patriarchate of Alexandria and Romanian Orthodox Church govern regional affairs. Councils such as the Holy Synod convene to address doctrine and discipline; historical precedents include the Council of Constantinople (879–880) and modern assemblies like the Holy and Sacred Synod of the Church of Greece.

Churches and Jurisdictions

Major jurisdictions include the Church of Greece, Bulgarian Orthodox Church, Georgian Orthodox Church, Polish Orthodox Church, Orthodox Church in America, and diaspora communities under eparchies tied to Moscow Patriarchate or Ecumenical Patriarchate of Constantinople. Oriental counterparts following Miaphysitism include the Coptic Orthodox Church of Alexandria, Armenian Apostolic Church, and Syriac Orthodox Church—distinct historically and theologically. Autocephaly disputes have involved the Orthodox Church of Ukraine and controversies with the Russian Orthodox Church.

Practices and Daily Life

Daily practices feature prayer rules such as the Jesus Prayer, participation in the Eucharist at parish churches and monasteries like Mount Athos, observance of fasting periods including Great Lent and the Nativity Fast, and sacramental rites including Baptism, Chrismation, Confession, and Holy Orders. Monasticism traces to figures like Saint Anthony the Great and institutions such as Lavra of Saint Sabbas the Sanctified. Devotion to icons involves veneration rather than worship, guided by teachings from councils addressing Iconoclasm and defended by theologians like John of Damascus.

Relations with Other Christian Traditions

Relations with the Roman Catholic Church involve historical ruptures like the East–West Schism and modern dialogues exemplified by meetings between Pope John Paul II and Ecumenical Patriarch Bartholomew I. Interactions with Protestantism include theological exchanges and ecumenical projects with bodies such as the World Council of Churches and national councils like the Conference of European Churches. Relations with Oriental Orthodox Churches involve bilateral dialogues addressing Christological formulas and common witness, while contemporary diplomacy has engaged secular states including Russia, Greece, and Turkey over legal status, property, and cultural heritage.

Category:Eastern Christianity