Orthodox Church of Constantinople

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The Ecumenical Patriarchate of Constantinople, often referred to as the Ecumenical Patriarchate, holds an honorary primacy among the Eastern Orthodox churches. Its origins trace back to the bishopric of Byzantium, which was elevated to an archbishopric when Emperor Constantine the Great moved the Roman Empire's capital there, renaming it Constantinople. The Council of Constantinople in 381 recognized the bishop of Constantinople's equal rights to the bishop of Rome, and the Council of Chalcedon in 451 assigned jurisdiction over a large area in the Balkans and Asia Minor.12

The patriarchate played a significant role in spreading Byzantine Orthodox Christianity throughout Eastern Europe. While it represents a challenge to the universal claims of Rome, dialogue and rapprochement have occurred, notably with the lifting of mutual anathemas in 1964. Today, the patriarchate's direct jurisdiction is limited, but it retains influence over various dioceses and autonomous churches globally.134

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Nestorius
…was an early bishop of Constantinople whose views on the nature and person of Christ led to the calling of the Second Council of Ephesus in 431 and to Nestorianism, one of the major Christian heresies. A few small Nestorian churches still exist.
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…was an early bishop of Constantinople whose views on the nature and person of Christ led to the calling of the Second Council of Ephesus in 431 and to Nestorianism, one of the major Christian heresies. A few small Nestorian churches still exist.
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Eastern Orthodoxy
The norm of church organization
…century there were many: the Church of Constantinople (Istanbul), the Church of Alexandria (Africa), the Church of Antioch (with headquarters in Damascus, Syria), and the churches of Jerusalem, Russia, Ukraine, Georgia, Serbia
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…century there were many: the Church of Constantinople (Istanbul), the Church of Alexandria (Africa), the Church of Antioch (with headquarters in Damascus, Syria), and the churches of Jerusalem, Russia, Ukraine, Georgia, Serbia
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Byzantine Empire
Christological controversies
…between the rival sees of Constantinople, Alexandria, and Rome. When Nestorius, patriarch of Constantinople in 428, adopted the Antiochene formula in his argument that the Virgin Mary could not rightly be called Theotokos (literally “God-bearer”), or the mother of Christ’s divine nature, he was perceived as stressing the human nature…
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…between the rival sees of Constantinople, Alexandria, and Rome. When Nestorius, patriarch of Constantinople in 428, adopted the Antiochene formula in his argument that the Virgin Mary could not rightly be called Theotokos (literally “God-bearer”), or the mother of Christ’s divine nature, he was perceived as stressing the human nature…
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