In part 10 of our series on the 21 Ecumenical Councils, Justin Hibbard discusses the efforts to appease the monophysites by inventing two heresies: monoenergism and monotheletism. Why were these Christological positions condemned at the Third Council of Constantinople?

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SOURCES:

* The Ecumenical Councils of the Catholic Church: A History by Joseph Kelly

* The First Seven Ecumenical Councils (325-787): Their History and Theology by Leo Davis

* Byzantine Empire: Map, History, and Facts

* The Rise of Islam

* Correspondence between Patriarch Sergius and Pope Honorius

* New Advent: 3rd Council of Constantinople

* Third Council of Constantinople

PREVIOUS EPISODES IN THIS SERIES

* Episode 146: Introduction to the 21 Ecumenical Councils

* Episode 147: The World that Led to the Council of Nicaea

* Episode 148: The First Council of Nicaea (325)

* Episode 149: From Nicaea to Constantinople

* Episode 150: The First Council of Constantinople (381)

* Episode 151: The Council of Ephesus (431)

* Episode 152: The Council of Chalcedon (451)

* Episode 153: The 2nd Council of Constantinople (553)

* Episode 154: War Among the Monotheists

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