The Gospel (allegory) triumphs over Heresia and the Serpent. Gustaf Vasa Church, Stockholm, Sweden, sculpture by Burchard Precht.
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. 1255-1260.

Heresy (i/) is any belief or theory that is strongly at variance with established beliefs or customs, in particular the accepted beliefs of a church or religious organization. A heretic is a proponent of such claims or beliefs.[1] Heresy is distinct from both apostasy, which is the explicit renunciation of one's religion, principles or cause,[2] and blasphemy, which is an impious utterance or action concerning God or sacred things.[3]

The term is usually used to refer to violations of important religious teachings, but is used also of views strongly opposed to any generally accepted ideas.[4] It is used in particular in reference to Christianity, Judaism, and Islam.[5]

In certain historical Christian, Islamic and Jewish cultures, among others, espousing ideas deemed heretical has been and in some cases still is subjected not merely to punishments such as excommunication, but even the death penalty.


The term heresy, from Greek αἵρεσις, originally meant "choice" or "thing chosen",[6] but it came to mean the "party or school of a man's choice"[7] and also referred to that process whereby a young person would examine various philosophies to determine how to live. The word "heresy" is usually used within a Christian, Jewish, or Islamic context, and implies slightly different meanings in each. The founder or leader of a heretical movement is called a heresiarch, while individuals who espouse heresy or commit heresy are known as heretics. Heresiology is the study of heresy.

Other Languages
Afrikaans: Kettery
العربية: هرطقة
asturianu: Herexía
Bân-lâm-gú: Īⁿ-toan
башҡортса: Бидғәт
беларуская: Ерась
беларуская (тарашкевіца)‎: Ерась
български: Ерес
bosanski: Hereza
català: Heretgia
čeština: Hereze
Cymraeg: Heresi
dansk: Kætteri
Deutsch: Häresie
eesti: Ketserlus
Ελληνικά: Αίρεση
español: Herejía
Esperanto: Herezo
euskara: Heresia
فارسی: هرطقه
français: Hérésie
galego: Herexía
한국어: 이단
hrvatski: Krivovjerje
Ido: Herezio
Bahasa Indonesia: Ajaran sesat
interlingua: Heresia
íslenska: Villutrú
italiano: Eresia
עברית: כפירה (דת)
қазақша: Ересьтер
Latina: Haeresis
latviešu: Ķecerība
lietuvių: Erezija
magyar: Eretnekség
македонски: Ерес
മലയാളം: പാഷണ്ഡത
Nederlands: Ketterij
日本語: 異端
norsk: Heresi
norsk nynorsk: Kjetteri
Nouormand: Hérésie
occitan: Eretgia
polski: Herezja
português: Heresia
română: Erezie
русиньскый: Кацирство
русский: Ересь
саха тыла: Иэрэс
Scots: Heresy
shqip: Herezia
Simple English: Heresy
slovenčina: Heréza
slovenščina: Herezija
српски / srpski: Јерес
srpskohrvatski / српскохрватски: Hereza
svenska: Kätteri
Tagalog: Erehiya
Türkçe: Dalalet
українська: Єресь
اردو: بدعت
vèneto: Eresia
Tiếng Việt: Dị giáo
中文: 異端