In Utterance 478 of the Pyramid Texts we are told:
As for any spirit or god who will help me when I ascend to the sky on the ladder of the God; my bones are assembled for me, my limbs are gathered together for me, and I leap up to the sky in the presence of the god of the Lord of the ladder.
As we know, it is Isis who gathered together the dismembered body parts of Osiris and reassembled them.
We are further told:
A ladder is knotted together by Re before Osiris, a ladder is knotted together by Horus before his father Osiris when he goes to his spirit, one of them being on this side and one of them being on that, while I am between them.
In shamanism, certain themes are prevalent such as the ascension to the spirit world of the Gods upon a ladder. A common feature of the initiation process of the shaman often involves the initiate undergoing a traumatic out-of-body-experience in which the shaman senses that they are being attacked and that their limbs are being torn apart, their body dismembered and reassembled before they can ascend the ladder to commune with the spirit world.
This state of consciousness is very reminiscent of the Ancient Egyptian story of Osiris in which Osiris is attacked, dismembered only to be put together again by his consort, Isis, before journeying on to the Underworld.
Could it be also that the 'Ladder' to the spirit world is symbolised in the Great Pyramid through the so-called 'Relieving Chambers' with the body of the initiate placed in the coffer below?
Could it be, as many before me have theorised, that the Great Pyramid (and perhaps other pyramids) was constructed as a Shamanic initiation chamber, a chamber whose very design would aid the initiate's journey to the spirit world to commune with the Hawk-headed and Ibis-headed Gods who would impart their wisdom upon the initiate?
Could it be, as others have hypothesised, that the true origins of Ancient Egyptian religious tradition is rooted in a shamanist tradition? Could this be how the Priesthood of Heliopolis attained their knowledge?