RELIGION

There is no time or place in human history where religious movements are not being founded, and religious practice is not merely a matter of founding prophets but also of local traditions and reforms. There is not even a single era when the Abrahamic religions were developed; the Jewish prophets lived some centuries before Jesus, Muhammad came six centuries after him, and Bahá'u'lláh founded the Bahá'í Faith over a millennium later.

Middle Ages

A rare Tanjore style painting from the late 19th century depicting the ten gurus of Sikhism with Bhai Bala and Bhai Mardana.

The Middle Ages (800 AD-1500 AD) was a time of philosophical development for several major religions. As Christianity became the focus of scholarship throughout Europe, Buddhist missions were sent to East Asia, and Islam was spread throughout the Middle East, Central Asia, Southeast Asia, North Africa and parts of Europe and India. Meanwhile, the decline of Buddhism in India led to the flourishing of folk religion there.

Many medieval religious movements emphasized mysticism, such as the Cathars and related movements in the West, the Bhakti movement in India and Sufism in Islam. Monotheism was articulated distinctly in Christian Christology and in Islamic Tawhid. Hindu monotheist notions of Brahman likewise reached their classical form with the teaching of Adi Shankara.

Religion was the dominant ideology behind many conflicts of the Middle Ages. Muslims were in conflict with Zoroastrians during the Islamic conquest of Persia; Christians were in conflict with Muslims during the Byzantine-Arab Wars, Crusades, Spanish Reconquista and Ottoman wars in Europe; Christians were in conflict with Jews during the Crusades, Reconquista and Inquisition; Shamans were in conflict with Buddhists, Taoists, Muslims and Christians during the Mongol invasions; and Muslims were in conflict with Hindus and Sikhs during Muslim conquest in the Indian subcontinent.

Modern period

European colonisation during the 15th to 19th centuries resulted in the spread of Christianity to Sub-Saharan Africa, the Americas, Australia and the Philippines. The 18th century saw the beginning of secularisation in Europe, rising to notability in the wake of the French Revolution. By the 20th century, religion was no longer the dominant ideological force behind international wars, but had generally been unseated by political ideals such as democracy and communism.

In the 20th century, the regimes of Communist Eastern Europe and Communist China were explicitly anti-religious. A great variety of new religious movements originated in the 20th century, many proposing syncretism of elements of established religions. Adherence to such new movements is limited, however, remaining below 2% worldwide in the 2000s. Adherents of the classical world religions account for more than 75% of the world's population, while self-reported alliegance to indigenous folk religions has fallen to 4%. As of 2005, an estimated 14% of the world's population identifies as nonreligious.

In the 19th and 20th centuries, the academic practice of comparative religion divided religious belief into philosophically-defined categories called "world religions." However, some recent scholarship has argued that not all types of religion are necessarily separated by mutually exclusive philosophies, and furthermore that the utility of ascribing a practice to a certain philosophy, or even calling a given practice religious, rather than cultural, political, or social in nature, is limited. The list of religious movements given here is an attempt to summarize the most important regional and philosophical influences, but it is by no means a complete description of every religious community.

• Abrahamic religions are practiced throughout the world. They share in common the Jewish patriarch Abraham and the Torah as an initial sacred text, although the degree to which the Torah is incorporated into religious beliefs varies between traditions.
  • Judaism accepts only the prophets of the Torah, but also relies on the authority of rabbis. It is practiced by the Jewish people, an ethnic group currently centered in Israel but also scattered throughout the Jewish diaspora. Today, Jews are outnumbered by Christians and Muslims.
  • Christianity is centered on the life and teachings of Jesus of Nazareth as presented in the Gospels and the writings of the apostle Paul (1st century CE). The Christian faith is essentially faith in Jesus as the Christ, the Son of God, and as Savior and Lord. As the religion of Western Europe during the time of colonization, Christianity has been propagated throughout the world. However, Christianity is not practiced as a single orthodoxy but as a mixture of Catholicism, Eastern Orthodoxy, Oriental Orthodoxy, and many forms of Protestantism. In the United States, for example, African-Americans and Korean-Americans usually attend separate churches from Americans of European descent. Many European countries as well as Argentina have established a specific church as the state religion, but this is not the case in the United States nor in many other majority Christian areas.
  • Islam refers to the religion taught by the Islamic prophet Muhammad, a major political and religious figure of the 7th century CE. Islam is the dominant religion of northern Africa, the Middle East, and South Asia. As with Christianity, there is no single orthodoxy in Islam but a multitude of traditions which are generally categorized as Sunni and Shia, although there are other minor groups as well. Wahhabi Islam is the established religion of the Kingdom of Saudi Arabia. There are also several Islamic republics, including Iran which is run by a Shia Supreme Leader.
  • The Bahá'í Faith was founded in the 19th century in Iran and since then has spread worldwide. It teaches unity of all religious philosophies and accepts all of the prophets of Judaism, Christianity, and Islam as well as additional prophets including its founder Bahá'u'lláh.
  • Smaller Abrahamic groups that are not heterodox versions of the four major groupings include Mandaeism, Samaritanism, the Druze, and the Rastafari movement.
• Indian religions are practiced or were founded in the Indian subcontinent. Concepts most of them share in common include karma, caste, reincarnation, mantras, yantras, and darśana. Islam in India has also been influenced by Indian religious practices.
  • Hinduism is a term introduced by British scholars to describe the similar philosophies of Vaishnavism, Shaivism, and related groups. Today, proponents of Hindu nationalism sometimes include Buddhists, Jains, and Sikhs under the category of Hinduism, but the Dalit Buddhist movement is excluded because of their denial of the caste system. Hinduism is not a monolithic religion in and of itself but a religious category containing dozens of separate philosophies.
  • Sikhism is a monotheistic religion founded on the teachings of Guru Nanak and ten successive Sikh Gurus in 15th century Punjab. Sikhs are found mostly in India.
  • Jainism, taught primarily by Parsva (9th century BCE) and Mahavira (6th century BCE), is an ancient Indian religion that prescribes a path of non-violence for all forms of living beings in this world. Jains are found mostly in India.
  • There are dozens of new Indian religions and Hindu reform movements, such as Ayyavazhi and Swaminarayan Faith.
• Buddhism was founded by Siddhattha Gotama in the 6th century BCE. Buddhists generally agree that Gotama aimed to help sentient beings end their suffering by understanding the true nature of phenomena, thereby escaping the cycle of suffering and rebirth (saṃsāra), that is, achieving Nirvana.
  • Theravada Buddhism, which is practiced mainly in Southeast Asia alongside folk religion, shares some characteristics of Indian religions. It is based in a large collection of texts called the Pali Canon.
  • Vajrayana Buddhism, sometimes considered a form of Mahayana, was developed in Tibet and is still most prominent there and in surrounding regions.
  • Under the heading of Mahayana (the "Great Vehicle") fall a multitude of doctrines which began their development in China and are still relevant in Vietnam, in Korea, in Japan, and to a lesser extent in Europe and the United States. Mahayana Buddhism includes such disparate teachings as Zen, Pure Land, and Soka Gakkai.
  • Two notable new Buddhist sects are Hòa Hảo and the Dalit Buddhist movement, which were developed separately in the 20th century.
• Yazdânism is a non-Abrahamic monotheistic category including the traditional beliefs of the Yazidi, Alevi, and Ahl-e Haqq.
• Religious movements centered in the United States are often derived from Christian tradition. They include the Latter Day Saint movement, Christian evangelicalism, and Unitarian Universalism among hundreds of smaller groups.
• Folk religion is a term applied loosely and vaguely to disorganized local practices. It is also called paganism, shamanism, animism, ancestor worship, and totemism, although not all of these elements are necessarily present in local belief systems. The category of "folk religion" can generally include anything that is not part of an organization. The modern neopagan movement draws on folk religion for inspiration.
  • African traditional religion is a category including any type of religion practiced in Africa before the arrival of Islam and Christianity, such as Yoruba religion or San religion. There are many varieties of religions developed by Africans in the Americas derived from African beliefs, including Santería, Candomblé, Umbanda, Vodou, and Oyotunji.
  • Folk religions of the Americas include Aztec religion, Inca religion, Maya religion, and modern Catholic beliefs such as the Virgin of Guadalupe. Native American religion is practiced across the continent of North America.
  • Australian Aboriginal culture contains a mythology and sacred practices characteristic of folk religion.
  • Chinese folk religion, practiced by Chinese people around the world, is a primarily social practice including popular elements of Confucianism and Taoism, with some remnants of Mahayana Buddhism. Most Chinese do not identify as religious due to the strong Maoist influence on the country in recent history, but adherence to religious ceremonies remains common. New religious movements include Falun Gong and I-Kuan Tao.
  • Traditional Korean religion was a syncretic mixture of Mahayana Buddhism and Korean shamanism. Unlike Japanese Shinto, Korean shamanism was never codified and Buddhism was never made a social necessity. In some areas these traditions remain prevalent, but Korean-influenced Christianity is far more influential in society and politics.
  • Traditional Japanese religion is a mixture of Mahayana Buddhism and ancient indigenous practices which were codified as Shinto in the 19th century. Japanese people retain nominal attachment to both Buddhism and Shinto through social ceremonies, but irreligion is common.
• A variety of new religious movements still practiced today have been founded in many other countries besides the United States and Japan, including Cao Đài in Vietnam.
  • Shinshūkyō is a general category for a wide variety of religious movements founded in Japan since the 19th century. These movements share almost nothing in common except the place of their founding. The largest religious movements centered in Japan include Soka Gakkai, Tenrikyo, and Seicho-No-Ie among hundreds of smaller groups.

Sociological classifications of religious movements suggest that within any given religious group, a community can resemble various types of structures, including "churches", "denominations", "sects", "cults", and "institutions".

Religious scholars generally agree that writing a single definition that applies to all religions is difficult or even impossible, because all people examine religion with some kind of critical eye, and the term is therefore fraught with ideological consequences for anyone who might want to construct a universal definition. Talal Asad writes that "there cannot be a universal definition of religion ... because that definition is itself the historical product of discursive processes"; Thomas A. Tweed, while defending the idea of religion in general, writes that "it would be foolish to set up an abstract definition of religion's essence, and then proceed to defend that definition from all comers."

The earliest definition of religion is from Johnson's Dictionary, which simply calls it "a system of faith and worship". Friedrich Schleiermacher in the late 18th century defined religion as das schlechthinnige Abhängigkeitsgefühl, commonly translated as "a feeling of absolute dependence". His contemporary Hegel disagreed thoroughly, defining religion as "the Divine Spirit becoming conscious of Himself through the finite spirit." Clifford Geertz's definition of religion as a "cultural system" was dominant for most of the 20th century and continues to be widely accepted today.

A religion is an organized approach to human spirituality which usually encompasses a set of narratives, symbols, beliefs and practices, often with a supernatural or transcendent quality, that give meaning to the practitioner's experiences of life through reference to a higher power, God or gods, or ultimate truth.It may be expressed through prayer, ritual, meditation, music and art, among other things. It may focus on specific supernatural, metaphysical, and moral claims about reality (the cosmos and human nature) which may yield a set of religious laws, ethics, and a particular lifestyle. Religion also encompasses ancestral or cultural traditions, writings, history, and mythology, as well as personal faith and religious experience.

The term "religion" refers to both the personal practices related to communal faith and to group rituals and communication stemming from shared conviction. "Religion" is sometimes used interchangeably with "faith" or "belief system," but it is more socially defined than personal convictions, and it entails specific behaviors, respectively.

The development of religion has taken many forms in various cultures. It considers psychological and social roots, along with origins and historical development.

In the frame of western religious thought, religions present a common quality, the "hallmark of patriarchal religious thought": the division of the world in two comprehensive domains, one sacred, the other profane. Religion is often described as a communal system for the coherence of belief focusing on a system of thought, unseen being, person, or object, that is considered to be supernatural, sacred, divine, or of the highest truth. Moral codes, practices, values, institutions, tradition, rituals, and scriptures are often traditionally associated with the core belief, and these may have some overlap with concepts in secular philosophy. Religion is also often described as a "way of life" or a life stance.