The Cult
The ba was not a god with public temples but a recipient of mortuary cult. Its welfare depended on continued offerings at the tomb, the Opening of the Mouth ritual, and the recitation of Book of the Dead spells that allowed it to leave the burial chamber by day and rejoin the mummy at night. New Kingdom tomb paintings at Deir el-Medina and in the Valley of the Kings, including the tomb of Sennedjem, show the ba-bird hovering over the mummy or traveling through the underworld. Gold-leaf ba-amulets and wooden ba-bird figures placed on Twenty-first-Dynasty Theban coffins were votive provisions for this journey. Papyri such as the Book of the Dead of Ani in the British Museum preserve the textual machinery of the cult. No festival calendar or priesthood belonged to the ba itself; its “cult” was the family mortuary cult of every Egyptian.


