# Council of Ephesus (431)

URL: https://christianity-history.com/timeline/431-council-of-ephesus
Location: Ephesus, Asia
Themes: Council

The third ecumenical council condemns Nestorius and proclaims Mary Theotokos, Mother of God. At this point in the timeline (431), the Bishop of Rome was Pope Celestine I (10 September 422 – 27 July 432).

## Why it matters
Council of Ephesus mattered because its decisions defined doctrine, discipline or church order for generations of Christians.

Pope at the time: [Pope Celestine I](https://christianity-history.com/popes/pope-celestine-i)

## Sources
- [Wikipedia — Council of Ephesus](https://en.wikipedia.org/wiki/Council_of_Ephesus)
- [Encyclopaedia Britannica topic lookup — Council of Ephesus](https://www.britannica.com/search?query=Council+of+Ephesus)
- [Wikipedia — Age Of Councils (period overview)](https://en.wikipedia.org/wiki/First_seven_ecumenical_councils)