The
Council of Chalcedon took place in
451 A.D. It is the fourth of the first seven
Ecumenical Councils in
Christianity, and is therefore recognized as infallible in its dogmatic definitions by the Roman Catholic and Eastern Orthodox churches. It set forth the
Chalcedonian Creed, which describes the full humanity and full divinity of
Jesus Christ, the second person of the
Holy Trinity. Ecumenical councils after the seventh are recognized as infallible only by Roman Catholics.