The Ethiopian Orthodox Tewahedo Church (; transliterated Amharic: Yäityop'ya ortodoks täwahedo bétäkrestyan) is the largest of the Oriental Orthodox Christian Churches. The Ethiopian Church was administratively part of the Coptic Orthodox Church of Alexandria since the first half of the 4th century until 1959, when it was granted its own Patriarch by the Coptic Orthodox Pope of Alexandria and Patriarch of All Africa, Cyril VI. The Ethiopian Orthodox Tewahedo Church, being one of the oldest Christian churches and a non-Chalcedonian Church, is not in communion with the Ethiopian Catholic Church, a Chalcedonian Church. Ethiopia is the second country only after Armenia to have officially proclaimed Christianity as state religion (in 333AD) though some argue it may even be the first.