the sixth ecumenical council in 680-681 which condemned Monothelitism by defining two wills in Christ, divine and human n
2
the fifth ecumenical council in 553 which held Origen's writings to be heretic
3
the third ecumenical council in 431 which declared Mary as mother of God and condemned Pelagius
4
the Nicene Creed was adopted there in 325 n the seventh ecumenical council in 787 which refuted iconoclasm and regulated the veneration of holy images n the first ecumenical council in 325 which produced the wording of the Nicene Creed and condemned the heresy of Arianism
