When and where
381 AD in Constantinople (now Istanbul, Turkey)
Crisis or controversy
The need to insist on
Demonstrate to the world that Christians of the East are not Arians;
Apollinaris was teaching that Christ was not true man.
Convened: Theodosius I, Emperor;
St. Basil the Great;
St. Gregory of Nyssa;
St. Gregory of Nazianzanus, theologians;
Ratified: Damasus, Pope
Decrees and resolutions
Renewed the work of Nicaea;
Condemned the heresy of the Macedonians (the Holy Spirit
was not really God); Condemned the heresy of Apollinaris
(that Christ was not really a man).
The 4th century CE Church of Haghia Eirene ("Divine Peace") in Istanbul.
The site of the
Ecumenical Council of Constantinople of 381AD.