Library › Ecumenical councils › First Council of Constantinople (381)First Council of Constantinople (381)Ecumenical councils, NPNF II.14The Holy Creed Which the 150 Holy Fathers Set Forth, Which is Consonant with the Holy and…Letter of the Same Holy Synod to the Most Pious Emperor Theodosius the Great, to Which…1. Canon 12. Canon 23. Canon 34. Canon 45. Canon 56. Canon 67. Canon 7The Synodical Letter