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What Is the Orthodox Church? – Fr. Andrew Stephen Damick
The Eastern Orthodox Church, officially the Orthodox Catholic Church, is the second-largest Christian church, with over 250 million members. One of the oldest religious institutions in the world, it has played a prominent role in the history and culture of Eastern and Southeastern Europe, the Caucasus, and the Near East. It operates as a communion of autocephalous churches, each governed by its bishops, called a Holy Synod. The church has no central doctrinal or governance authority analogous to the Roman Catholic pope, but the Ecumenical Patriarch of Constantinople is recognised by all as primus inter pares of the bishops.