The Egyptian pantheon functioned very differently compared with many of the other polytheistic deity groups that have existed around the world.
An example: the Pharaoh Akenathen (Amenhotep IV), father of King Tutankhamen, is sometimes considered to be the originator of monotheism. This, however, represents a misunderstanding of how the Egyptian mindset operated. Amenhotep was not a monotheist; he was a henotheist.
A henotheist, you ask? Henotheism specifically means the “worship of one god at a time but not of a single god” (Hornung, Conceptions of God p.237). In other words, while he believed in the primacy of the Sun God, Amun-Ra, he didn’t dismiss the existence of the other Gods; he just didn’t care to worship them, or honor them by building temples.
Also, the Egyptian deities exhibited great fluidity and polymorphism.
Compare them to the Greek Gods and Goddesses, who were firmly characterized, as seen in the 12 Olympian gods: “the Egyptian deities were first and foremost possessors of power. They could all be prayed to about anything, but there was some degree of specialization” (Pinch Egyptian Myth: A Very Short Introduction p.39).
Generally the Egyptian people chose a cult God that fitted best with their lives and situation, so while a person who worked the boats on the Nile may chose Sobek (a crocodile headed God of the Nile) as their primary God, a farmer may chose Min, a God of reproduction and agriculture. Yet all the Egyptian Gods and Goddesses were powerful enough to provide their devotees with almost everything they required, and it was only in specific and extreme circumstances that an individual would consult another deity outside their primary one.
This ability to have multiple domains of influence impacted the mythology of the Egyptians too; often stories would adapt to include a central deity or highlight their role or perspective. This is most evident in the multitude of Egyptian creation stories, where a number of different Gods and Goddesses are given a supporting role in various cult traditions.
Egyptian narratives were also fluid, changeable, and to the outsider, seem to accept contradictions. They did not require a single story to be canonical truth; the various stories could co-exist alongside each other and still maintain validity. Unlike the Greek Gods and Goddesses who tended to be more fixed and linear, the “Egyptian deities are not fixed characters with fixed life histories” (Pinch Egyptian Myth: A Very Short Introduction p.39). Nor do they fit neatly into hierarchical family trees; Osiris could be the partner of Isis or Nephthys, while Horus could be either the son of Osiris or Osiris’ brother, Set. Similarly, Hathor could be the mother, partner or daughter of Ra, yet at the same time be the wife of Horus, and all of this could be accepted as true.
Visual representations of Egyptian deities were not fixed either, and their basic iconography can take on multiple forms that changes both their personal attributes and usage in worship. For example, the Goddess Hathor is predominately represented in her full Goddess form wearing the sun disk between two horns that made up her Crown, and it is in this form that she is most often showed receiving tribute, or bestowing blessings. However, Hathor can also be represented as the Celestial Cow, and this form highlights her nurturing and maternal nature as the being that produces the sacred milk that exclusively nurtures Gods and Pharaohs alike. Hathor can also appear as the Column of Hathor, a disembodied human head with cow ears which acted as a symbol of protection and was often used to decorate the kings’ birthing chambers in various temples (Hornung, Conceptions of God p.110).
While Hathor was most often associated with the Celestial Cow, she could also take completely different forms, sometimes represented as a lioness, snake or hippopotamus. In these forms she was still Hathor, but she would also borrow the attributes of other creature, such as the fierceness of a lioness or the cunning of a snake. This fluidity of form enabled the Egyptian deities to be infinitely more flexible in their personalities and allowed them to be multi-faceted and complex.
As well as being able to infer attributes upon their deities, the Egyptians also had the willingness to combine existing Gods and Goddesses to make new deities. This could be as straight forward as combining the crocodile God Sobek with the sun God Ra, to create Sobek Ra. This combination created a new God that now had both the crocodile attributes of longevity, wiliness and the power of Sobek, but also the life-giving elements of Ra.
Combinations could also be slightly more complex and involve one God or Goddess with a specific form of another God or Goddess, like in the case of Ra Horakhty, which fused the God Ra with one certain aspect of Horus, Horus of the Horizon (the aforementioned Horakhty), to make a new God who embodied the rising sun over the horizon.
Sometimes the Gods and Goddesses would not combine into an new, independent deity, but just borrow their iconic attributes, as was the case with Isis who sometimes wore the crown of Hathor when she wanted to invoke her maternal side. While it should be noted that the Greek Gods and Goddesses did have the ability to change their forms, they always retained the same personality when they did. For example, Zeus whether God, swan or bull still carried the same alpha-male, sexually dominant personality, and his behavioral patterns were always predictable within his archetype. While this didn’t deter the Greeks from syncretizing their Gods with those of Ancient Egypt (especially during Ptolemic Era (305-30 B.C.E.), when Greece controlled Egypt), their correspondences tended to be one-to-one: one example is Thoth-Hermes.
Whether Thoth was a depicted as an ibis or as a baboon, he was still cognate with Hermes, which is why many scholars trace the roots of Alchemy, the province of Hermes Trismagestus (Hermes the Thrice Great) back to Egypt (also that one possible etymology of Alchemy is Al Khem, with khem being the name of the rich black soil that surrounded the river Nile).
What this means is part of the key to understanding the Egyptian pantheon begins with moving away from Ptolemic syncretism and understanding that there is no true way to align these systems on a one to one basis with any other without ignoring the multi-dimensional nature of the Egyptian Gods that is core to their very being.