The population of Estonian Apostolic Orthodox Church is 20,000.
The population of Estonian Orthodox Church of Moscow Patriarchate is 150,000.
Estonian Orthodox Church of Moscow Patriarchate was created in 1920.
Like the Catholic Church, the Orthodox believe in Apostolic Succession.
One Holy Catholic and Apostolic Church
The Church founded by Peter in Jerusalem, on the Day of Pentecost, in AD 30, was the first apostolic Christian church. Later "Apostolic" came to be used as an identifier, to distinguish one Christian community from another. All churches would consider themselves to be "apostolic" and "orthodox," although most do not add "apostolic" or "orthodox" into their names.
Syriac Orthodox Church's population is 5,600,000.
The population of Orthodox Church in America is 1,000,000.
Romanian Orthodox Church's population is 18,806,428.
The population of Polish Orthodox Church is 600,000.
Japanese Orthodox Church's population is 30,000.
No the Greek Orthodox Chuch is part of the One Holy Catholic and Apostolic Church.
The Church founded by Peter in Jerusalem, on the Day of Pentecost, in AD 30, was the first apostolic Christian church. Later "Apostolic" came to be used as an identifier, to distinguish one Christian community from another. All churches would consider themselves to be "apostolic" and "orthodox," although most do not add "apostolic" or "orthodox" into their names.