The Stele of Revealing is an Egyptian religious artifact dating from the 26th dynasty. It is a wooden tablet overlaid with stucco and painted with mythological scenes and hieroglyphic writing. It was made to commemorate the death of a Theban priest of the god Mentu named Ankh-f-n-khonsu. Although many objects were typically sealed inside the tomb along with the body, funerary steles such as this one were placed outside the tomb as a focal point for offerings given by friends and relatives of the deceased.
The Stele of Revealing is especially sacred to Thelemites because it is through this artifact that the Law of Thelema was revealed to Aleister Crowley in 1904 e.v., inaugurating the New Aeon of Horus. Soon after discovering the Stele in a museum in Cairo, Crowley received the mystical communication known as The Book of the Law. Much of what Crowley discovered in the Stele of Revealing "set the stage" or formed the basis for these channeled verses.