The elemental spirits are invoked in two stages: they are initially called, and they are then directed to the place of manifestation by intoning the hekau for empowering the four genii and Khepri. W hen they are called, the elemental receptors should be brought forth and placed on the altar: the lamp is lit, the water is poured, the incense ignited, and the salt/Earth is uncovered. For the fifth element, the temple oil is poured on the altar or anointed on an image of the Neter of the season. If the temple is fortunate enough to have its own land, foundation deposits may be implanted at this stage.
In conclusion, a “pure offering” is made, which may consist of fresh fruit and floral trays that may be distributed to the participants after ward. And finally, if so elected, the erection of the temple pillars may now be performed since the elemental forces have descended to etherically constitute the Divine House. In lieu of pillars, the altar may be placed on the axis of the temple, and upon it the sacred stone of the temple may be brought forth-a representation of the sacred mound upon which the Neter has come to rest.
It does not appear that a strict order of calling on the elemental spirits was followed in ancient times. Some traditions follow the cycle of creation Quintessence, Water, Fire, Earth, and Air. Others, probably in noting the passage of heavenly bodies over the horizons, follow the diurnal cycle-Fire I east, Water I south, Air/west, Earth/north, and Quintessence/center.
— Rosemary Clark: The Sacred Magic of Ancient Egypt