Slavic paganism describes Slavic pagan beliefs before Christianisation[1] Slavs had their own mythology. Sources about Slavs and their beliefs mainly come from the old Ruthenian chronicles and notes of German bishops. A lot of information is in Helmold's Chronica Sclavorum. There's also Chronicle of Thietmar, and the other chronicles, although they are not the only sources of information about Slavs and their beliefs. There's also for example the diary of a Jewish trader of the Slaves - Ibrahim Ibn Jacob.