The Orthodox Church: An Introduction

Occasionally, the word Catholic is also used to describe the Orthodox Church. This description, dating back to the second century, is embodied in the Nicene Creed, which acknowledges One, Holy, Catholic, and Apostolic Church. From the Orthodox perspective, Catholic means that the Church is universal and also that she includes persons of all races and cultures. It also affirms that the Church has preserved the fullness of the Christian faith.
It is not unusual for titles such as Greek, Russian, and Antiochian to be used in describing Orthodox Churches. These appellations refer to the cultural or national roots of a particular parish, diocese, or archdiocese.

Diversity in Unity

The Orthodox Church is an international federation of patriarchal, autocephalous, and autonomous churches. Each church is independent in her internal organization and follows her own particular customs. However, all the churches are united in the same faith and order. The Orthodox Church acknowledges that unity does not mean uniformity. Some churches are rich in history, such as the Church of Constantinople, while others are relatively young, such as the Church of Finland. Some are large, such as the Church of Russia, while others are small, such as the Church of Sinai. Each Church is led by a synod of bishops. The president of the synod is known as the Patriarch, Archbishop, Metropolitan, or Catholicos. Among the various bishops, the Ecumenical Patriarch of Constantinople is accorded a "place of honor" and is regarded as "first among equals." In America and Western Europe, where Orthodoxy is relatively young, there are a number of dioceses and archdioceses which are directly linked to one of these autocephalous Churches. For example, the Greek Orthodox Archdiocese is under the care of the Patriarchate of Constantinople. While the Archdiocese enjoys a good measure of internal autonomy and is headed by an Archbishop, it owes its spiritual allegiance to the Church of Constantinople.