III. The Elemental World and the Heaven World. Waking Life, Sleep and Death.

The journey backwards begins with the last event before death and proceeds at triple speed, to birth. When in this backward passage of remembrance the human being reaches his birth, the part of the astral body that has been transformed by the ego combines with the causal body and what has not been so transformed falls away like a shade, a phantom; this is the astral corpse of the human being. He has laid aside the physical corpse and the etheric corpse and now the astral corpse. He now lives through new conditions: those of Devachan. Devachan is all around us, just as is the astral world.