Second Council of Dvin

The Second Council of Dvin was a church Synod or Church Council held in 554 in the city of Dvin.
The Second Council of Dvin was called by Catholicos Nerses II of Bagrevand, and it was in this council that the bishops declined to accept the canons of Chalcedon. This was significant as it was the moment where the Armenian Church formally rejected the dyophysite formula that had been adopted by some bishops at the Council of Chalcedon. This decision was made because of the Armenians' observation that the decrees of Chalcedon had caused the doctrine of Nestorius to spread.

Impact of the Council

The rejection of the Chalcedonian definition further cemented the schism between the Armenian Apostolic Church and the Patriarchate of Constantinople.
The Council adopted 87 canons and marks the beginning of the Armenian Church Calendar. It also established various administration and conduct rules and regulations for members of the Armenian Church.