http://en.wikipedia.org/wiki/PtahIt was said (in the Shabaka Stone) that it was Ptah who called the world into being,
having dreamt creation in his heart, and speaking it, his name meaning opener,
in the sense of opener of the mouth. Indeed the opening of the mouth ceremony,
performed by priests at funerals to release souls from their corpses, was said to
have been created by Ptah. Atum was said to have been created by Ptah to rule
over the creation, sitting upon the primordial mound.
In art, he is portrayed as a bearded mummified man, often wearing a skull cap,
with his hands holding an ankh, was, and djed, the symbols of life, power and stability,
respectively. It was also considered that Ptah manifested himself in the Apis bull.
In Memphis, Ptah was worshipped in his own right, and was seen as Atum's father,
or rather, the father of Nefertum, the younger form of Atum. When the beliefs about the
Ennead and Ogdoad were later merged, and Atum was identified as Ra (Atum-Ra),
himself seen as Horus (Ra-Herakhty), this led to Ptah being said to be married to Sekhmet,
at the time considered the earlier form of Hathor, Horus', thus Atum's, mother.