HeresyHeresy 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. Heresy in Christianity, Judaism, 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 renunciation of one's religion, principles or cause; and from blasphemy, which is an impious utterance or action concerning God or sacred things.
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.
Religious persecutionReligious persecution is the systematic mistreatment of an individual or a group of individuals as a response to their religious beliefs or affiliations or their lack thereof. The tendency of societies or groups within societies to alienate or repress different subcultures is a recurrent theme in human history. Moreover, because a person's religion frequently determines his or her sense of morality, worldview, , attitudes towards others, and overall personal identity to a significant extent, religious differences can be significant cultural, personal, and social factors.
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).
Religious pluralismReligious pluralism is an attitude or policy regarding the diversity of religious belief systems co-existing in society. It can indicate one or more of the following: Recognizing and tolerating the religious diversity of a society or country, promoting freedom of religion, and defining secularism as neutrality (of the state or non-sectarian institution) on issues of religion as opposed to opposition of religion in the public forum or public square that is open to public expression, and promoting friendly separation of religion and state as opposed to hostile separation or antitheism espoused by other forms of secularism.
Persecution of ChristiansThe persecution of Christians can be historically traced from the first century of the Christian era to the present day. Christian missionaries and converts to Christianity have both been targeted for persecution, sometimes to the point of being martyred for their faith, ever since the emergence of Christianity. Early Christians were persecuted at the hands of both Jews, from whose religion Christianity arose, and the Romans who controlled many of the early centers of Christianity in the Roman Empire.
Apostasy in IslamApostasy in Islam (ردة, or ارتداد, ) is commonly defined as the abandonment of Islam by a Muslim, in thought, word, or through deed. It includes not only explicit renunciations of the Islamic faith by converting to another religion or abandoning religion, but also blasphemy or heresy by those who consider themselves Muslims, through any action or utterance which implies unbelief, including those who deny a "fundamental tenet or creed" of Islam, (such as suggesting jinn are not real).
History of IslamThis history of Islam concerns the political, social, economic, military, and cultural developments of the Islamic civilization. Most historians believe that Islam originated in Mecca and Medina at the start of the 7th century CE. Muslims regard Islam as a return to the original faith of the Abrahamic prophets, such as Adam, Noah, Abraham, Moses, David, Solomon, and Jesus, with the submission (Islām) to the will of God.