In ancient Egypt, the symbol is attested from the Old Kingdom (Sneferu, 26th century BCE), often flanked on either side with a uraeus. In early Egyptian religion, the symbol Behedeti represented Horus of Edfu, later identified with Ra-Harachte. It is sometimes depicted on the neck of Apis, the bull of Ptah. As time passed (according to interpretation) all of the subordinated gods of Egypt were considered to be aspects of the sun god. The winged sun is symbolic also of the eternal soul. When placed above the temple doors it served as a reminder to the people of their eternal nature.