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In page Mandaeism:

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Mandaeism, as the religion of the Mandaean people, is based more on a common heritage than on any set of religious creeds and doctrines. The corpus of Mandaean literature, though quite large, covers topics such as eschatology, the knowledge of God and the afterlife—in an unsystematic manner. Moreover, it is known only to the priesthood and a few laypeople.[1]