First Council of Constantinople | |
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![]() 9th-century Byzantine manuscript illumination of the First Council of Constantinople, Homilies of St. Gregory of Nazianzus, 879–883 | |
Date | 381 |
Accepted by | |
Previous council | First Council of Nicaea |
Next council |
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Convoked by | Emperor Theodosius I |
President | Timothy of Alexandria, Meletius of Antioch, Gregory of Nazianzus, and Nectarius of Constantinople |
Attendance | 150 (no representation of Western Church) |
Topics | Arianism, Holy Spirit |
Documents and statements | Nicene Creed of 381, 7 canons (3 disputed) |
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The First Council of Constantinople (Latin: Concilium Constantinopolitanum; Ancient Greek: Σύνοδος τῆς Κωνσταντινουπόλεως) was a council of Christian bishops convened in Constantinople (now Istanbul, Turkey) in AD 381 by the Roman Emperor Theodosius I.[1][2] This second ecumenical council, an effort to attain consensus in the church through an assembly representing all of Christendom, except for the Western Church,[3] confirmed the Nicene Creed, expanding the doctrine thereof to produce the Niceno-Constantinopolitan Creed, and dealt with sundry other matters. It met from May to July 381[4] in the Church of Hagia Irene and was affirmed as ecumenical in 451 at the Council of Chalcedon.