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 proponen
Saint Nicholas with Arius at the Council of Nicaea, at which Nicholas is said to have hit Arius; Arius was known for preaching that Jesus was created by God and has a lower status, a heresy in Trinitarianism.
Former German Catholic friar Martin Luther was famously excommunicated as a heretic by Pope Leo X by his papal bull Decet Romanum Pontificem in 1520.
The burning of the pantheistic Amalrician heretics in 1210, in the presence of King Philip II Augustus. In the background is the Gibbet of Montfaucon and, anachronistically, the Grosse Tour of the Temple. Illumination from the Grandes Chroniques de France, c. AD 1455–1460.
Massacre of the Waldensians of Mérindol in 1545
Heresy in Christianity denotes the formal denial or doubt of a core doctrine of the Christian faith as defined by one or more of the Christian churches.
Heresy
…or customs, particularly the accepted beliefs or religious law of a religious organization. A heretic is a proponent of a heresy. Heresy in Judaism, Christianity, and Islam has at times been met with censure ranging from excommunication to the death penalty. Heresy is distinct from apostasy, which is the explicit…
This 1711 illustration for the Index Librorum Prohibitorum depicts the Holy Ghost supplying the book burning fire.