Miaphysitism Versus Monophysitism
Like all Oriental Orthodox Churches, the Armenian Church has been referred to as monophysite by both Catholic and Eastern Orthodox theologians because it rejected the decisions of the Council of Chalcedon, which condemned the belief of one incarnate nature of Christ (monophysis). The Armenian Church officially severed ties with Rome and Constantinople in 554, during the Second Council of Dvin where the Chalcedonian dyophysite christological formula was rejected.
However, again like other Oriental Orthodox Churches, the Armenian Orthodox Church argues that the identification as "monophysitism" is an incorrect description of its position. It considers Monophysitism, as taught by Eutyches and condemned at Chalcedon, a heresy and only disagrees with the formula defined by the Council of Chalcedon. The Armenian Church instead adheres to the doctrine defined by Cyril of Alexandria, considered as a saint by the Chalcedonian Churches as well, who described Christ as being of one incarnate nature, where both divine and human nature are united (miaphysis). To distinguish this from Eutychian and other versions of Monophysitism this position is called miaphysitism. Whereas the prefix "mono" means "only", thus emphasising the singular nature of Christ, "mia", simply means "one" unemphatically, and allows for a compound nature.
In recent times, both Chalcedonian and anti-Chalcedonian churches have developed a deeper understanding for each other's positions, recognizing their substantial agreement while maintaining their respective theological language.
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