A saint is one who has been recognized for having an exceptional degree of holiness, sanctity, and virtue. While the English term 'saint' originated in Christianity, the term is now used by historians of religion 'in a more general way to refer to the state of special holiness that many religions attribute to certain people,' with the Jewish Tzadik, the Islamic wali, the Hindu rishi or guru, and the Buddhist arahat or boddhisatva also referred to as saints. Depending on the religion, saints are recognized either through official church recognition or by popular acclaim (see Folk saints). In Christianity, 'saint' has a wide variety of meanings, depending on its usage and the denomination. The original Christian usage referred to any believer who is 'in Christ' and in whom Christ dwells, whether in heaven or in earth.