Oriental Orthodox Family
Oriental Orthodox Churches refer to the group of churches whose roots extend directly back to Jesus Christ and his Apostles through unbroken Apostolic Succession as well. They keep the faith of the first three ecumenical councils the first Council of Nicaea, the First Council of Constantinople and the Council of Ephesus. These Churches are also called Old Oriental Orthodox Churches. The Oriental Orthodox churches came to parting ways with rest of the Christianity in the Fifth Century. While the Roman and Byzantine Churches came to accept Chalcedon as the Fourth Ecumenical Council, the Oriental Orthodox Churches acknowledge only the first three. Their theology closely follows the teaching of St. Cyril of Alexandria. The Oriental Orthodox rejected Nestorianism. Hence, they advocate a formula that stressed the unity of the Incarnation over all other considerations. Oriental Orthodox Churches reject the Monophysite teachings of Eutyches and the Dyophysite teachings of Nestorius as well.
The Oriental Orthodox Communion
Coptic Orthodox Church of Alexandria (French Coptic Orthodox Church), Syriac Orthodox Church of Antioch and All East (Jacobite Syriac Orthodox Church), Armenian Apostolic Church – (Mother See of Holy Etchmiadzin, Holy See of Cilicia, ArmenianPatriarchate of Constantinople, Armenian Patriarchate of Jerusalem), The Indian Orthodox Malankara Church (Brahmavar (Goan) Orthodox Church) Ethiopian Orthodox Tewahedo Church, Eritrean Orthodox Tewahedo Church. (British Orthodox Church which was earlier a part of Coptic Orthodox Patriarchate remains out of the OO communion since October 2015.)