Many Rodnovers regard their religion as a faithful continuation of ancient beliefs that survived as folk religion or as conscious "double belief" following the Christianisation of the Slavs in the Middle Ages. Rodnovery draws upon surviving historical and archaeological sources and folk religion, often integrating them with non-Slavic sources such as Hinduism (as they are believed to be coming from the same Proto-Indo-European source). Rodnover theology and cosmology may be described as pantheism and polytheism—worship of the supreme God of the universe and of the multiple gods, ancestors and spirits of nature identified through Slavic culture. Adherents usually meet together in groups to conduct religious ceremonies. These typically entail the invocation of gods, sacrifices and the pouring of libations, dances and a communal meal.