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431
Anno Domini

Ecumenical Council

Council of Ephesus

June–July 431 Ephesus, Asia Minor Convoked by: Emperor Theodosius II 200 bishops 6 canons
Ecumenical Council — Universally Recognised
6Canons
Section I

The Crisis that summoned Council of Ephesus

The apologetic argument: Defined Mary as Theotokos (Mother of God) and condemned Nestorianism. Cyril of Alexandria acted as Rome's representative — the council was opened with the reading of Pope Celestine's condemnation of Nestorius. The council thanked Rome explicitly.
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