Monoenergism is a Christian

Christian

A Christian is a person who adheres to Christianity, an Abrahamic, monotheistic religion based on the life and teachings of Jesus of Nazareth as recorded in the Canonical gospels and the letters of the New Testament...

 heresy

Heresy

Heresy is a controversial or novel change to a system of beliefs, especially a religion, that conflicts with established dogma. It is distinct from apostasy, which is the formal denunciation of one's religion, principles or cause, and blasphemy, which is irreverence toward religion...

 related to Monophysitism

Monophysitism

Monophysitism , or Monophysiticism, is the Christological position that Jesus Christ has only one nature, his humanity being absorbed by his Deity...

.

In the 7th century, the Byzantine Emperor Heraclius

Heraclius

Heraclius was Byzantine Emperor from 610 to 641.He was responsible for introducing Greek as the empire's official language. His rise to power began in 608, when he and his father, Heraclius the Elder, the exarch of Africa, successfully led a revolt against the unpopular usurper Phocas.Heraclius'...

 attempted to solve the schism

Schism (religion)

A schism , from Greek σχίσμα, skhísma , is a division between people, usually belonging to an organization or movement religious denomination. The word is most frequently applied to a break of communion between two sections of Christianity that were previously a single body, or to a division within...

 between Chalcedonians

Chalcedonian Creed

The Confession of Chalcedon , also known as the Doctrine of the Hypostatic Union or the Two-Nature Doctrine, was adopted at the Council of Chalcedon in 451 in Asia Minor. That Council of Chalcedon is one of the first seven Ecumenical Councils accepted by Eastern Orthodox, Catholic, and many...

 and Monophysites, and suggested the compromise of Monoenergism. This compromise adopted the Chalcedonian belief that Christ

Christ

Christ is the English term for the Greek meaning "the anointed one". It is a translation of the Hebrew , usually transliterated into English as Messiah or Mashiach...

 had two natures, but tried to address Monophysite misgivings by the view that Christ had one "energy". The definition of the term "energy" was left deliberately vague. Monoenergism was accepted by the Patriarchs of Constantinople

Patriarch of Constantinople

The Ecumenical Patriarch is the Archbishop of Constantinople – New Rome – ranking as primus inter pares in the Eastern Orthodox communion, which is seen by followers as the One, Holy, Catholic, and Apostolic Church....

, Antioch

Patriarch of Antioch

Patriarch of Antioch is a traditional title held by the Bishop of Antioch. As the traditional "overseer" of the first gentile Christian community, the position has been of prime importance in the church from its earliest period...

, and Alexandria

Patriarch of Alexandria

The Patriarch of Alexandria is the Archbishop of Alexandria and Cairo, Egypt. Historically, this office has included the designation of Pope , and did so earlier than that of the Bishop of Rome...

, as well as by the Armenians

Armenian Apostolic Church

The Armenian Apostolic Church is the world's oldest National Church, is part of Oriental Orthodoxy, and is one of the most ancient Christian communities. Armenia was the first country to adopt Christianity as its official religion in 301 AD, in establishing this church...

, though not by the Patriarch of Jerusalem

Armenian Patriarchate of Jerusalem

The Armenian Patriarchate of Jerusalem also known as the Armenian Patriarchate of St. James is located in the Armenian Quarter of Jerusalem. The Armenian Patriarch of Jerusalem remains under the authority of the Catholicos of Armenia and of all Armenians of the Armenian Apostolic Church...

 or Pope Honorius I

Pope Honorius I

Pope Honorius I was pope from 625 to 638.Honorius, according to the Liber Pontificalis, came from Campania and was the son of the consul Petronius. He became pope on October 27, 625, two days after the death of his predecessor, Boniface V...

. The lack of support from the Pope led Heraclius to abandon the belief in 638. Instead he declared the doctrine of Monothelitism

Monothelitism

Monothelitism is a particular teaching about how the divine and human relate in the person of Jesus, known as a Christological doctrine, that formally emerged in Armenia and Syria in 629. Specifically, monothelitism teaches that Jesus Christ had two natures but only one will...

, though this did not solve the schism either.

Both Monoenergism as well as Monotheletism were condemned as heresies

Heresy

Heresy is a controversial or novel change to a system of beliefs, especially a religion, that conflicts with established dogma. It is distinct from apostasy, which is the formal denunciation of one's religion, principles or cause, and blasphemy, which is irreverence toward religion...

 by the Sixth Ecumenical Council

Third Council of Constantinople

The Third Council of Constantinople, counted as the Sixth Ecumenical Council by the Roman Catholic and Eastern Orthodox churches and other Christian groups, met in 680/681 and condemned monoenergism and monothelitism as heretical and defined Jesus Christ as having two energies and two wills...

, held in Constantinople

Constantinople

Constantinople was the capital of the Roman, Eastern Roman, Byzantine, Latin, and Ottoman Empires. Throughout most of the Middle Ages, Constantinople was Europe's largest and wealthiest city.-Names:...

in 680.