The Festival Songs of Isis and Nephthys are a work of ancient Egyptian literature whose author is unknown. Probably not older than the Twenty-sixth Dynasty, the songs form part of the funeral hieratic papyrus of Nesi Ámsu (No. 10158 in the British Museum). The title is “The Verses of the Festival of the two Zerti,” and the papyrus tells us it was to be sung by two virgins in the temple of Osiris on the occasion of the annual festival held for five days in the fourth month of the sowing season. The verses concern the killing of Osiris by Set, and the later reconstruction of Osiris' body by the goddesses Isis and Nephthys.[1]