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Hinduism

Hinduism is a diverse system of thought with beliefs spanning monotheism, polytheism, panentheism, pantheism, pandeism, monism, and atheism among others. Hinduism has no traditional ecclesiastical order, no centralized religious authorities, no universally accepted governing body, no binding holy book nor any mandatory prayer attendance requirements. In its diffuse and open structure, numerous schools and sects of Hinduism have developed and spun off in India with help from its ascetic scholars, since the Vedic age. The six Astika and two Nastika schools of Hindu philosophy, in its history, did not develop a missionary or proselytization methodology, and they co-existed with each other. Most Hindu sub-schools and sects do not actively seek converts. Individuals have had a choice to enter, leave or change their god(s), spiritual convictions, accept or discard any rituals and practices, and pursue spiritual knowledge and liberation (moksha) in different ways. However, various schools of Hinduism do have some core common beliefs, such as the belief that all living beings have Atman (soul), a belief in karma theory, spirituality, ahimsa (non-violence) as the greatest dharma or virtue, and others.

Religious conversion to Hinduism has a long history outside India. Merchants and traders of India, particularly from Indian peninsula, carried their religious ideas, which led to religious conversions to Hinduism in Indonesia, Champa, Cambodia and Burma. Some sects of Hindus, particularly of the Bhakti schools began seeking or accepting converts in early to mid 20th century. For example, groups like the International Society for Krishna Consciousness accept those who have a desire to follow their sects of Hinduism and have their own religious conversion procedure.

Since 1800 CE, religious conversion from and to Hinduism has been a controversial subject within Hinduism. Some have suggested that the concept of missionary conversion, either way, is contrary to the precepts of Hinduism. Religious leaders of some of Hinduism sects such as Brahmo Samaj have seen Hinduism as a non-missionary religion yet welcomed new members, while other leaders of Hinduism's diverse schools have stated that with the arrival of missionary Islam and Christianity in India, the view that "there is no such thing as proselytism in Hinduism" must be re-examined.

In recent decades, mainstream Hinduism schools have attempted to systematize ways to accept religious converts, with an increase in inter-religious mixed marriages. The steps involved in becoming a Hindu have variously included a period where the interested person gets an informal ardha-Hindu name and studies ancient literature on spiritual path and practices (English translations of Upanishads, Agama, Itihasa, ethics in Sutra, Hindu festivals, yoga). If after a period of study, the individual still wants to convert, a Namakarana Samskara ceremony is held, where the individual adopts a traditional Hindu name. The initiation ceremony may also include Yajna (i.e., fire ritual with Sanskrit hymns) under guidance of a local Hindu priest. Some of these places are mathas and asramas (hermitage, monastery), where one or more gurus (spiritual guide) conduct the conversion and offer spiritual discussions. Some schools encourage the new convert to learn and participate in community activities such as festivals (Diwali etc.), read and discuss ancient literature, learn and engage in rites of passages (ceremonies of birth, first feeding, first learning day, age of majority, wedding, cremation and others).