“Theo (cont): Personal life, or perhaps rather its ideal reflection, can only be continued if sustained by the two-fold force, that is by the close union of Buddhi and Manas in every rebirth or personal life. The least deviation from harmony damages it; and when it is destroyed beyond redemption the two forces separate at the moment of death.
During a brief interval the personal form (called indifferently Kama rupa and Mayavi rupa), the spiritual efflorescence of which, attaching itself to the Ego, follows it into Devachan and gives to the permanent individuality its personal colouring (pro tem., so to speak), is carried off to remain in Kamaloka and to be gradually annihilated.
For it is after the death of the utterly depraved, the unspiritual and the wicked beyond redemption, that arrives the critical and supreme moment.
If during life the ultimate and desperate effort of the INNER SELF (Manas), to unite something of the personality with itself and the high glimmering ray of the divine Buddhi, is thwarted;
if this ray is allowed to be more and more shut out from the ever-thickening crust of physical brain, the Spiritual EGO or Manas, once freed from the body, remains severed entirely from the ethereal relic of the personality; and the latter, of Kama rupa, following its earthly attractions, is drawn into the remains in Hades, which we call the Kamaloka.
These are “the withered branches” mentioned by Jesus as being cut off from the Vine. Annihilation, however, is never instantaneous, and may require centuries sometimes for its accomplishment.
But there the personality remains along with the remnants of other more fortunate personal Egos, and becomes with them a shell and an Elementary.
As said in Isis, it is the two classes of “Spirits”, the shells and the Elementaries, which are the leading “Stars” on the great spiritual stage of “materializations”.
And you may be sure of it, it is not they who incarnate; and, therefore, so few of these “dear departed ones” know anything of reincarnation, misleading thereby the Spiritualists.”
H. P. Blavatsky
The Mark Of God: Understanding Your "I AM Presence" 