Orthodox Church Organization - Eastern Orthodoxy

Eastern Orthodoxy

The Orthodox Church is a communion comprising the fifteen separate autocephalous hierarchical churches that recognize each other as "canonical" Orthodox Christian churches. There is an essentially political disagreement over the autocephaly of one of the churches—the Orthodox Church in America.

There is no single earthly head of all the Orthodox Churches comparable to the Pope of Rome. The highest-ranking bishop of the communion is the Patriarch of Constantinople, who is also primate of one of the autocephalous churches. These organizations are in full communion with each other, so any priest of any of those churches may lawfully minister to any member of any of them, and no member of any is excluded from any form of worship in any of the others, including reception of the Eucharist. Each local or national Orthodox Church is a portion of the Orthodox Church as a whole.

In the early Middle Ages, the One Holy Catholic and Apostolic Church was ruled by five patriarchs: the bishops of Rome, Constantinople, Alexandria, Antioch, and Jerusalem; these were collectively referred to as the Pentarchy. Each patriarch had jurisdiction over bishops in a specified geographic region. This continued until 927, when the autonomous Bulgarian Archbishopric became the first newly-promoted patriarchate to join the original five.

The patriarch of Rome was "first in place of honor" among the five patriarchs. Disagreement about the limits of his authority was one of the causes of the Great Schism, conventionally dated to the year 1054, which split the church into the Catholic Church in the West, headed by the Bishop of Rome, and the Orthodox Church, led by the four eastern patriarchs. After the schism this honorary primacy shifted to the Patriarch of Constantinople, who had previously been accorded the second-place rank at the First Council of Constantinople.