ecumenical council

the sixth ecumenical council in 680-681 which condemned Monothelitism by defining two wills in Christ, divine and human n

the fifth ecumenical council in 553 which held Origen's writings to be heretic

the third ecumenical council in 431 which declared Mary as mother of God and condemned Pelagius

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