The one addressed is the covering brain itself, the anointed cerebrum spread over the mystical mind like the wings that hide the mercy seat. The cherub that covereth is the right hemisphere concealing the unseen, the part of the head set in place to shelter what is holy within. This is the mythic figure the old stories tell as Lucifer beside Saturn and God, the bright covering power that once walked the height.
The holy mountain is the higher realms of consciousness, the summit of the head where the light is known. To walk up and down among the stones of fire is to move through the burning points of spirit set into that high ground, the sparks of consciousness that light the inner peak. Spirit is fire, and these are its embers underfoot. The passage speaks of a covering intelligence placed at the top of a person, moving over the head among the fires of the awakened mind, before it turns and falls.
Cherub that covereth: the cerebrum, the right hemisphere spread over and concealing the mystical mind
Holy mountain of God: the higher realms of consciousness, the summit of the head where light is known
Stones of fire: the burning points of spirit set into the high ground, the sparks that light the inner peak