Christianity
- 6829
- The Gospel of the Holy Twelve
- This text is claimed by Rev. G. J. Ouseley to be the original gospel from which the present Four Gospels were derived.
- 6838
- Chalcedon, Council of
- The Fourth Ecumenical Council, held in 451, from 8 October until 1 November inclusive, at Chalcedon, a city of Bithynia in Asia Minor.