Gnosticism is a collection of religious ideas and systems that coalesced in the late 1st century AD among Jewish and early Christian sects. These various groups emphasized personal spiritual knowledge (gnosis) above the proto-orthodox teachings, traditions, and authority of religious institutions. Gnostic cosmogony generally presents a distinction between a supreme, hidden God and a malevolent lesser divinity who is responsible for creating the material universe. Consequently, Gnostics considered material existence flawed or evil, and held the principal element of salvation to be direct knowledge of the hidden divinity, attained via mystical or esoteric insight. Many Gnostic texts deal not in concepts of sin and repentance, but with illusion and enlightenment.
Judaism is an Abrahamic, monotheistic, and widely an ethnic religion. It comprises the collective spiritual, cultural, and legal traditions of the Jewish people, having originated as an organized religion in the Middle East during the Bronze Age. Contemporary Judaism evolved from Yahwism, the cultic religious movement of ancient Israel and Judah, around the 6th/5th century BCE, and is thus considered to be one of the oldest monotheistic religions. Religious Jews regard Judaism as their means of observing the Mosaic covenant, which was established between God and the Israelites, their ancestors. Along with Samaritanism, to which it is closely related, Judaism is one of the two oldest Abrahamic religions.
A sect is a subgroup of a religious, political, or philosophical belief system, usually an offshoot of a larger group. Although the term was originally a classification for religious separated groups, it can now refer to any organization that breaks away from a larger one to follow a different set of rules and principles. Sects are usually created due to perception of heresy by the subgroup and/or the larger group.
A religious denomination is a subgroup within a religion that operates under a common name and tradition, among other activities. The term refers to the various Christian denominations. It is also used to describe the five major branches of Judaism. Within Islam, it can refer to the branches or sects, as well as their various subdivisions, such as sub-sects, schools of jurisprudence, schools of theology and religious movements.
Ebionites as a term refers to a Jewish Christian sect, which viewed poverty as a blessing, that existed during the early centuries of the Common Era. The Ebionites embraced an adoptionist Christology, thus understanding Jesus of Nazareth as a mere man who, by virtue of his righteousness in following the Law of Moses, was chosen by God to be the Messiah. A majority of the Ebionites rejected as heresies the orthodox Christian beliefs in Jesus' divinity, virgin birth and substitutionary atonement; and therefore maintained that Jesus was born the natural son of Joseph and Mary, sought to abolish animal sacrifices by prophetic proclamation, and died as a martyr in order to move all Israel to repentance.
Christianity and Islam are the two largest religions in the world, with 2.8 billion and 1.9 billion adherents, respectively. Both religions are considered as Abrahamic, and are monotheistic, originating in the Middle East.
Comparative religion is the branch of the study of religions with the systematic comparison of the doctrines and practices, themes and impacts of the world's religions. In general the comparative study of religion yields a deeper understanding of the fundamental philosophical concerns of religion such as ethics, metaphysics and the nature and forms of salvation. It also considers and compares the origins and similarities shared between the various religions of the world. Studying such material facilitates a broadened and more sophisticated understanding of human beliefs and practices regarding the sacred, numinous, spiritual and divine.
Orthodoxy is adherence to correct or accepted creeds, especially in religion.
Christianity and other religions documents Christianity's relationship with other world religions, and the differences and similarities.
The religious perspectives on Jesus vary among world religions. Jesus' teachings and the retelling of his life story have significantly influenced the course of human history, and have directly or indirectly affected the lives of billions of people, including non-Christians. He is considered by many to be one of the most influential persons to have ever lived, finding a significant place in numerous cultural contexts.
Over the centuries of Islamic history, Muslim rulers, Islamic scholars, and ordinary Muslims have held many different attitudes towards other religions. Attitudes have varied according to time, place and circumstance.
A schism is a division between people, usually belonging to an organization, movement, or religious denomination. The word is most frequently applied to a split in what had previously been a single religious body, such as the Great East–West Schism or the Western Schism. It is also used of a split within a non-religious organization or movement or, more broadly, of a separation between two or more people, be it brothers, friends, lovers, etc.
Anti-Judaism describes a range of historic and current ideologies which are totally or partially based on opposition to Judaism, on the denial or the abrogation of the Mosaic covenant, and the replacement of Jewish people by the adherents of another religion, political theology, or way of life which is held to have superseded theirs as the "light to the nations" or God's chosen people. The opposition is maintained by the appropriation and adaptation of Jewish prophecy and texts, and the stigmatization of the very people who transmitted those texts. There have been Christian, Islamic, nationalistic, Enlightenment rationalist, and socio-economic variations of this theme, according to Nirenberg.
The term Abrahamic religion is a category to group the three major religions Judaism, Christianity and Islam together, due to their historical coexistence and competition, based around the figure Abraham, mentioned in the Hebrew Bible, the Christian Bible, and the Quran. It is used to show similarities between those religions and put them in contrast to Indian religions, Iranian religions, and the East Asian religions, although other religions and belief systems may refer to Abraham as well. Furthermore, some religions categorized as "Abrahamic religion" can also share aspects with elements from other categories, such as Indian religions, for example, Islam with Eastern religions.
For approximately a millennium, the Abrahamic religions have been predominant throughout all of the Middle East. The Abrahamic tradition itself and the three best-known Abrahamic religions originate from the Middle East: Judaism and Christianity emerged in the Levant in the 6th century BCE and the 1st century CE, respectively, while Islam emerged in Arabia in the 7th century CE.
An infidel is a person who is accused of disbelief in the central tenets of one's own religion, such as members of another religion, or irreligious people.
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.
Jewish polemics and apologetics in the Middle Ages were texts written to protect and dissuade Jewish communities from conversion to Christianity, or more rarely to Islam. The terms polemics and apologetics may be distinguished but may also be considered somewhat subjective. A smaller number of proselytizing text also exists intended to convert Christians, or more rarely Muslims, to Judaism. However, the vast majority of Jewish polemical literature was written in response to Christian polemical writings and with a permanent reference to Christian arguments.
Religious syncretism is the blending of religious belief systems into a new system, or the incorporation of other beliefs into an existing religious tradition.
