# Eastern Orthodox and Oriental Orthodox: a Diptych comparison Schema version 1.0. The Diptych displays; it does not score, rank, or adjudicate. ## 1. In its own words ### Eastern Orthodox The Eastern Orthodox Church is a communion of autocephalous churches, each governing itself, bound by the faith of the seven ecumenical councils and by eucharistic communion with one another. Its separation from the Oriental Orthodox turns on the Council of Chalcedon, and its separation from Rome on the schism of 1054 and all that followed. - [Eastern Orthodox](/tree/eastern-orthodox) ### Oriental Orthodox The Oriental Orthodox communion gathers the Coptic, Syriac, Armenian, Ethiopian, Eritrean, and Malankara churches. Their separation from the Chalcedonian churches is the oldest standing division in Christianity, and modern dialogue has established that the ancient quarrel rested in large part on terminology rather than on the faith confessed. - [Oriental Orthodox](/tree/oriental-orthodox) ## 2. Scale and spread ### Eastern Orthodox Eastern Orthodoxy counts roughly 260 million adherents, about twelve percent of the world's Christians. Majorities stand in Russia, Ukraine, Greece, Romania, Bulgaria, Serbia, and Georgia, organized as autocephalous churches in communion with one another. - [Eastern Orthodox](/tree/eastern-orthodox) ### Oriental Orthodox The Oriental Orthodox communion counts roughly 60 million adherents across its six autocephalous churches. The Ethiopian Orthodox Tewahedo Church is the largest, followed by the Coptic Orthodox Church in Egypt, with the Armenian, Syriac, Eritrean, and Malankara churches beside them. - [Oriental Orthodox](/tree/oriental-orthodox) ## 3. Historical timeline ### Eastern Orthodox - [The christian timeline](/history/christian) - [Council of Jerusalem](/history/events/council-of-jerusalem) - [First Council of Nicaea](/history/events/first-council-of-nicaea) - [Founding of Constantinople](/history/events/founding-of-constantinople) - [Athanasius' 39th Festal Letter](/history/events/athanasius-39th-festal-letter) - [First Council of Constantinople](/history/events/first-council-of-constantinople) - [Council of Ephesus](/history/events/council-of-ephesus) ### Oriental Orthodox - [The christian timeline](/history/christian) - [Council of Jerusalem](/history/events/council-of-jerusalem) - [First Council of Nicaea](/history/events/first-council-of-nicaea) - [Athanasius' 39th Festal Letter](/history/events/athanasius-39th-festal-letter) - [First Council of Constantinople](/history/events/first-council-of-constantinople) - [Council of Ephesus](/history/events/council-of-ephesus) - [Council of Chalcedon](/history/events/council-of-chalcedon) ## 4. Sources of authority ### Eastern Orthodox - [Trisagion Prayers](/prayers-and-creeds/trisagion-prayers) - [Jesus Prayer](/prayers-and-creeds/jesus-prayer) ### Oriental Orthodox Coverage: not documented. Coverage record created at intake; content not yet documented. ## 5. Ultimate reality ### Eastern Orthodox - [Eastern Orthodoxy](/world-views/eastern-orthodoxy) ### Oriental Orthodox - [Oriental Orthodoxy](/world-views/oriental-orthodoxy) ## 6. The human person ### Eastern Orthodox - [Eastern Orthodoxy](/world-views/eastern-orthodoxy) ### Oriental Orthodox - [Oriental Orthodoxy](/world-views/oriental-orthodoxy) ## 7. Problem and solution ### Eastern Orthodox - [Eastern Orthodoxy](/world-views/eastern-orthodoxy) ### Oriental Orthodox - [Oriental Orthodoxy](/world-views/oriental-orthodoxy) ## 8. Ethics and hard cases ### Eastern Orthodox - [Eastern Orthodoxy](/world-views/eastern-orthodoxy) ### Oriental Orthodox - [Oriental Orthodoxy](/world-views/oriental-orthodoxy) ## 9. Practice and devotion ### Eastern Orthodox - [The Prayer Rule](/devotion/the-prayer-rule) - [The Jesus Prayer](/devotion/the-jesus-prayer) - [The Akathist](/devotion/the-akathist) - [Trisagion Prayers](/prayers-and-creeds/trisagion-prayers) - [Jesus Prayer](/prayers-and-creeds/jesus-prayer) ### Oriental Orthodox Coverage: not documented. Coverage record created at intake; content not yet documented. ## 10. Community and governance ### Eastern Orthodox - [Eastern Orthodox](/church/eastern-orthodox) ### Oriental Orthodox - [Oriental Orthodox](/church/oriental-orthodox) ## 11. Art and material culture ### Eastern Orthodox - [Hagia Sophia](/art/entries/hagia-sophia) - [Rublev's Trinity](/art/entries/rublev-trinity) ### Oriental Orthodox Coverage: not documented. Coverage record created at intake; content not yet documented. ## 12. Science and technology posture ### Eastern Orthodox - [Patristic](/science/eras/patristic) - [Contemporary](/science/eras/contemporary) - [Orthodox](/science/traditions/orthodox) - [Evolution by natural selection](/science/technologies/evolution-by-natural-selection) - [Climate and creation](/science/flashpoints/climate-and-creation) - [Transhumanism and the body](/science/flashpoints/transhumanism-and-the-body) - [The limits of medicine](/science/flashpoints/the-limits-of-medicine) ### Oriental Orthodox Coverage: not documented. Coverage record created at intake; content not yet documented. ## 13. Internal diversity ### Eastern Orthodox - [Bulgarian Orthodox Church](/tree/bulgarian-orthodox-church) - [Church of Greece](/tree/church-of-greece) - [Ecumenical Patriarchate of Constantinople](/tree/ecumenical-patriarchate-of-constantinople) - [Georgian Orthodox Church](/tree/georgian-orthodox-church) - [Orthodox Church in America](/tree/orthodox-church-in-america) - [Patriarchate of Alexandria](/tree/patriarchate-of-alexandria) - [Patriarchate of Antioch](/tree/patriarchate-of-antioch) - [Patriarchate of Jerusalem](/tree/patriarchate-of-jerusalem) - [Romanian Orthodox Church](/tree/romanian-orthodox-church) - [Russian Orthodox Church](/tree/russian-orthodox-church) - [Serbian Orthodox Church](/tree/serbian-orthodox-church) ### Oriental Orthodox - [Armenian Apostolic Church](/tree/armenian-apostolic-church) - [Coptic Orthodox Church](/tree/coptic-orthodox-church) - [Eritrean Orthodox Tewahedo Church](/tree/eritrean-orthodox-tewahedo-church) - [Ethiopian Orthodox Tewahedo Church](/tree/ethiopian-orthodox-tewahedo-church) - [Malankara Orthodox Syrian Church](/tree/malankara-orthodox-syrian-church) - [Syriac Orthodox Church](/tree/syriac-orthodox-church) ## 14. Contributions ### Eastern Orthodox Coverage: not documented. Evaluative coverage is scheduled; this slot populates through sourced, reviewed records. ### Oriental Orthodox Coverage: not documented. Evaluative coverage is scheduled; this slot populates through sourced, reviewed records. ## 15. Internal critique ### Eastern Orthodox Coverage: not documented. Evaluative coverage is scheduled; this slot populates through sourced, reviewed records. ### Oriental Orthodox Coverage: not documented. Evaluative coverage is scheduled; this slot populates through sourced, reviewed records. ## 16. External critique and reply ### Eastern Orthodox Coverage: not documented. Evaluative coverage is scheduled; this slot populates through sourced, reviewed records. ### Oriental Orthodox Coverage: not documented. Evaluative coverage is scheduled; this slot populates through sourced, reviewed records. ## 17. Contested history ### Eastern Orthodox - [East-West Schism](/tree/schisms/east-west-schism) ### Oriental Orthodox - [Chalcedonian Schism](/tree/schisms/chalcedonian-schism) ## 18. What each says about the other ### Eastern Orthodox Coverage: not documented. This slot renders only when both directions stand populated and reviewed. ### Oriental Orthodox Coverage: not documented. This slot renders only when both directions stand populated and reviewed. ## 19. What this comparison cannot settle ### Eastern Orthodox This comparison sets two self-descriptions side by side; it does not decide between them. A tradition is a living range of positions, and each panel renders the range this site has documented, which is not the whole of the tradition. Where a cell is marked not yet documented, the gap belongs to this site's documentation, not to the tradition. Questions of truth between the panels turn on premises the reader brings: what counts as evidence, what authority is recognized, and what a human life is for. The instrument does not score, rank, or adjudicate. ### Oriental Orthodox This comparison sets two self-descriptions side by side; it does not decide between them. A tradition is a living range of positions, and each panel renders the range this site has documented, which is not the whole of the tradition. Where a cell is marked not yet documented, the gap belongs to this site's documentation, not to the tradition. Questions of truth between the panels turn on premises the reader brings: what counts as evidence, what authority is recognized, and what a human life is for. The instrument does not score, rank, or adjudicate. ## 20. Sources ### Eastern Orthodox - [Eastern Orthodox](/tree/eastern-orthodox) ### Oriental Orthodox - [Oriental Orthodox](/tree/oriental-orthodox) ## Sources - Eastern Orthodox: The Acts of the Seven Ecumenical Councils. - Eastern Orthodox: John Meyendorff, Byzantine Theology (1979). - Oriental Orthodox: Cyril of Alexandria, On the Unity of Christ. - Oriental Orthodox: V. C. Samuel, The Council of Chalcedon Re-Examined (1977).