HeterodoxyIn religion, heterodoxy (from Ancient Greek: , "other, another, different" + , "popular belief") means "any opinions or doctrines at variance with an official or orthodox position". Under this definition, heterodoxy is similar to unorthodoxy, while the adjective 'heterodox' could be applied to a dissident. Heterodoxy is also an ecclesiastical term of art, defined in various ways by different religions and churches.
OrthodoxyOrthodoxy (from Greek: ὀρθοδοξία) is adherence to correct or accepted creeds, especially in religion. Orthodoxy within Christianity refers to acceptance of the doctrines defined by various creeds and ecumenical councils in Antiquity, but different Churches accept different creeds and councils. Such differences of opinion have developed for numerous reasons, including language and cultural barriers. Eastern Orthodoxy and Oriental Orthodoxy are sometimes referred to simply as "Orthodoxy".
BlasphemyBlasphemy, as defined in some religions or religion-based laws, is an insult that shows contempt, disrespect or lack of reverence concerning a deity, an object considered sacred or something considered inviolable. Some religions regard blasphemy as a religious crime, especially the Abrahamic religions, including insulting the Islamic prophet Muhammad in Islam, speaking the "sacred name" in Judaism, and the "eternal sin" in Christianity.
Epiphanius of SalamisEpiphanius of Salamis (Ἐπιφάνιος; c. 310–320 – 403) was the bishop of Salamis, Cyprus, at the end of the 4th century. He is considered a saint and a Church Father by both the Eastern Orthodox and Catholic Churches. He gained a reputation as a strong defender of orthodoxy. He is best known for composing the Panarion, a compendium of eighty heresies, which included also pagan religions and philosophical systems.
ApostasyApostasy (əˈpɒstəsi; ἀποστασία , 'a defection or revolt') is the formal disaffiliation from, abandonment of, or renunciation of a religion by a person. It can also be defined within the broader context of embracing an opinion that is contrary to one's previous religious beliefs. One who undertakes apostasy is known as an apostate. Undertaking apostasy is called apostatizing (or apostasizing – also spelled apostacizing).
BogomilismBogomilism (Bulgarian: богомилство; Macedonian: богомилство; богумилство) was a Christian neo-Gnostic or dualist sect founded in the First Bulgarian Empire by the priest Bogomil during the reign of Tsar Peter I in the 10th century. It most probably arose in the region of Kutmichevitsa, today part of the region of Macedonia. The Bogomils called for a return to what they considered to be early spiritual teaching, rejecting the ecclesiastical hierarchy. Their primary political tendencies were resistance to the state and church authorities.
Acts of SupremacyThe Acts of Supremacy are two acts passed by the Parliament of England in the 16th century that established the English monarchs as the head of the Church of England; two similar laws were passed by the Parliament of Ireland establishing the English monarchs as the head of the Church of Ireland. The 1534 Act declared King Henry VIII and his successors as the Supreme Head of the Church, replacing the Pope. This first Act was repealed during the reign of the Catholic Queen Mary I.
ValentinianismValentinianism was one of the major Gnostic Christian movements. Founded by Valentinus in the 2nd century AD, its influence spread widely, not just within Rome but also from Northwest Africa to Egypt through to Asia Minor and Syria in the East. Later in the movement's history it broke into an Eastern and a Western school. Disciples of Valentinus continued to be active into the 4th century AD, after the Roman Emperor Theodosius I issued the Edict of Thessalonica (380 AD), which declared Nicene Christianity as the State church of the Roman Empire.
Medieval InquisitionThe Medieval Inquisition was a series of Inquisitions (Catholic Church bodies charged with suppressing heresy) from around 1184, including the Episcopal Inquisition (1184–1230s) and later the Papal Inquisition (1230s). The Medieval Inquisition was established in response to movements considered apostate or heretical to Roman Catholicism, in particular Catharism and Waldensians in Southern France and Northern Italy. These were the first movements of many inquisitions that would follow.
Roman InquisitionThe Roman Inquisition, formally Suprema Congregatio Sanctae Romanae et Universalis Inquisitionis, was a system of partisan tribunals developed by the Holy See of the Roman Catholic Church, during the second half of the 16th century, responsible for prosecuting individuals accused of a wide array of crimes according to Roman Catholic law and doctrine, relating to Catholic religious life or alternative religious or secular beliefs. It was established in 1542 by the leader of the Roman Catholic Church, Pope Paul III.
