The Book of the Dead is a religious text of ancient Egyptian estimated to have been written around 1250 BC. The book describes incantations, burial rites and other cool stuff. Translations exist from the famous Papyrus of Ani including one published by the British Museum. There's versions online too. The Book of the Dead has also been associated with the hopefully mythical tome called either the Necronomicon or Al Azif in the works of H.P.Lovecraft.