In the same way that all human beings are under the natural laws explained by biology, after the death of the physical body, the Spirit continues to be under natural laws. The recovery of conciousness will happen faster or slower according to the Spirit’s moral evolution and detachment from the material world. The superior Spirits teach that death is a natural process, that the Spirit continues its existence in the spiritual world, evolving e preparing himself to continue his evolution in the material world in the next incarnation.

149. What becomes of the soul at the moment of death?

"It becomes again a spirit; that is to say, it returns into the world of spirits, which it had quitted for a short time."

(Source: The Spirits’ Book, Chapter III – Return from the Corporeal to the Spirit Life.)

166. How can the soul that has not attained to perfection during the corporeal life complete the work of its purification?

"By undergoing the trial of a new existence."

(Source: The Spirits’ Book, Chapter IV – Plurality of Existences.)

167. What is the aim of reincarnation?

"Expiation; progressive improvement of mankind. Without this aim, where would be its justice?”

(Source: The Spirits’ Book, Chapter IV – Plurality of Existences.)

168. Is the number of corporeal existences limited, or does a spirit go on reincarnating himself forever?

"In each new existence, a spirit takes a step forwards in the path of progress; when he has stripped himself of all his impurities, he has no further need of the trials of corporeal life."

(Source: The Spirits’ Book, Chapter IV – Plurality of Existences.)