As soon as the internal organs of the body grow cold, our living substances, wherever they are located, are separated out. This would happen even if they were lost in the thousand interlinking passages of a labyrinth. The Lord’s mercy, which I had already experienced as a living and powerful pull, is so strong that it could not leave any living element behind.
The heavenly angels sitting at my head remained with me a while after I was “revived” without speaking except in their silent way. From their thought-speech I learned that they completely discounted all my misconceptions and falsities. It was not that they ridiculed them; they appeared not to care about them at all.
They speak by thoughts, without sound. This is the way they start to talk with the souls whom they accompany in the beginning.
People revived in this way by the heavenly angels are still experiencing a dim sort of life. When it is time to pass the people on to the spiritual angels, the heavenly angels wait a little and then withdraw once the spiritual angels have arrived. I was also shown the latter enable the reviving soul to receive the use of light.
from Secrets of Heaven, Volume 1, Sections 179-181