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At the Third Council of Constantinople, Pope Honorius I was posthumously excommunicated, with his support for monothelitism deemed to be heretical.
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Third Council of Constantinople
6th Ecumenical Council of the Christian churches (680–681)
The Third Council of Constantinople, counted as the Sixth Ecumenical Council by the Eastern Orthodox and Catholic Churches, and by certain other Western Churches, met in 680–681 and condemned monoenergism and monothelitism as heretical and defined Jesus Christ as having two…Source: Wikipedia (CC BY-SA)
Pope Honorius I
Head of the Catholic Church from 625 to 638
Pope Honorius I was the bishop of Rome from 27 October 625 to his death on 12 October 638. He was active in spreading Christianity among Anglo-Saxons and attempted to convince the Celts to calculate Easter in the Roman fashion. He is chiefly remembered for his correspondence…Source: Wikipedia (CC BY-SA)
Excommunication
Censure used to deprive, suspend, or limit membership in a religious community
Excommunication is an institutional act of religious censure used to deprive, suspend, or limit membership in a religious community or to restrict certain rights within it, in particular those of being in communion with other members of the congregation, and of receiving the…Source: Wikipedia (CC BY-SA)
Monothelitism
Christian theological doctrine
Monothelitism, or monotheletism, is a theological doctrine in Christianity that was proposed in the 7th century, but was ultimately rejected by the sixth ecumenical council. It held Christ as having only one will and was thus contrary to dyothelitism, the Christological doctrine…Source: Wikipedia (CC BY-SA)
Heresy
Belief that is strongly at variance with customs
Heresy is any belief or theory that is strongly at variance with established beliefs or customs, particularly the accepted beliefs or religious law of a religious organization. A heretic is a proponent of heresy.Source: Wikipedia (CC BY-SA)