Every local temple in Egypt possessed its own ennead and triad. The greatest ennead, however, was that of Ra and his children and grandchildren. This group was worshiped at Heliopolis, the center of sun worship. The origin of the local deities is obscure; some of them were taken over from foreign religions, and some were originally the animal gods of prehistoric Africa. Gradually, they were all fused into a complicated religious structure, although comparatively few local divinities became important throughout Egypt. In addition to those already named, the important divinities included the gods Amon, Thoth, Ptah, Khnemu, and Hapi, and the goddesses Hathor, Mut, Neit, and Sekhet. Their importance increased with the political ascendancy of the localities where they were worshiped. For example, the ennead of Memphis was headed by a triad composed of the father Ptah, the mother Sekhet, and the son Imhotep. Therefore, during the Memphite dynasties, Ptah became one of the greatest gods in Egypt. Similarly, when the Theban dynasties ruled Egypt, the ennead of Thebes was given the most importance, headed by the father Amon, the mother Mut, and the son Khonsu. As the religion became more involved, true deities were sometimes confused with human beings who had been glorified after death. Thus, Imhotep, who was originally the chief minister of the 3rd Dynasty ruler Zoser, was later regarded as a demigod. During the 5th Dynasty the pharaohs began to claim divine ancestry and from that time on were worshiped as sons of Ra. Minor gods, some merely demons, were also given places in local divine hierarchies.
Iconography
The Egyptian gods were represented with human torsos and human or animal heads. Sometimes the animal or bird expressed the characteristics of the god. Ra, for example, had the head of a hawk, and the hawk was sacred to him because of its swift flight across the sky; Hathor, the goddess of love and laughter,was given the head of a cow, which was sacred to her; Anubis was given the head of a jackal because these animals ravaged the desert graves in ancient times; Mut was vulture headed and Thoth was ibis headed; and Ptah was given a human head, although he was occasionally represented as a bull, called Apis. Because of the gods to which they were attached, the sacred animals were venerated, but they were never worshiped until the decadent 26th Dynasty. The gods were also represented by symbols, such as the sun disk and hawk wings that were worn on the headdress of the pharaoh.
Sun Worship
The only important god who was worshiped with consistency was Ra, chief of cosmic deities, from whom early Egyptian kings claimed descent. Beginning with the Middle Kingdom (2134-1668 BC), Ra worship acquired the status of a state religion, and the god was gradually fused with Amon during the Theban dynasties, becoming the supreme god Amon-Ra. During the 18th Dynasty the pharaoh Amenhotep III renamed the sun god Aton, an ancient term for the physical solar force.
