Two Qnome in One Parsopa, the Christology of the Church of the East, Beliefs & Restrictions
Standing
Concerns Point in Dispute
Currently States The formula is neither the Chalcedonian one of two natures in one hypostasis nor the miaphysite one of a single incarnate nature, which makes it the third position in the ancient christological division rather than a variant of either. The Catholic Church and the Assyrian Church of the East have since acknowledged that they confess the same faith in the Son in different formulations.
The Church of the East confesses that in Christ there are two kyane, natures, and two qnome, individual subsistences of those natures, united in one parsopa, translated as person, of filiation. Qnoma is not the same concept as the Greek hypostasis used in Chalcedonian christology, and translating qnoma as person in earlier controversies is what produced the historical charge that this church teaches two sons rather than one; the church holds it teaches no such thing, since the one parsopa is the single subject who is Christ. The formula is neither the Chalcedonian two-natures-in-one-hypostasis formula nor the miaphysite single-incarnate-nature formula, making it a third position in the ancient christological division rather than a variant of either side. The Common Christological Declaration signed by Pope John Paul II and Patriarch Mar Dinkha IV in 1994, the churches' own joint ecumenical statement rather than independent theological analysis, formally acknowledged that the Catholic Church and the Assyrian Church of the East confess the same faith in the Son in different formulations, addressing the historical charge at the level of official church relations even though the underlying terminological questions about qnoma and hypostasis continue to be studied by theologians on both sides.
Source Common Christological Declaration between the Catholic Church and the Assyrian Church of the East, John Paul II and Mar Dinkha IV