The Definition of Faith

Council of Chalcedon

The Fourth Ecumenical Council gathered at Chalcedon in A.D. 451, the largest of the ancient councils. Against Eutyches, who taught that Christ’s humanity was swallowed up in his divinity, and holding fast to the earlier councils and to the Tome of Pope Leo, the fathers set forth the Definition of Faith: the one Christ, acknowledged in two natures, without confusion, without change, without division, without separation.

1. Chapter 1
2. Chapter 2
3. Chapter 3
4. Chapter 4
5. Chapter 5
6. Chapter 6
7. Chapter 7
8. Chapter 8
9. Chapter 9

The holy, great, and ecumenical synod, assembled by the grace of God and the command of our most religious and Christian Emperors, Marcian and Valentinian, Augusti, at Chalcedon, the metropolis of the Bithynian Province, in the martyry of the holy and victorious martyr Euphemia, has decreed as follows: