The Pyrami Texts are a collection of ancient Egyptian religious texts from the time of the Old Kingdom. Written in Old Egyptian, the pyramid texts were carved on the walls and sarcophagi of the pyramids at Saqqara during the 5th and 6th Dynasties of the Old Kingdom. Unlike the Coffin Texts and Book of the Dead into which parts of the pyramid texts later evolved, the pyramid texts were reserved only for the pharaoh and were not illustrated. The pyramid texts mark the first written mention of the god Osiris, who would become the most important deity associated with afterlife.