V. The Human Being and its Expression in Greek Art

Under normal earthly conditions, when a person leaves his physical body and his etheric body, it is because the physical body, whether through illness or old age, has become very similar to the earth, so that it wants to unite with the earth. Or, through some kind of injury, the physical body has been brought to such a state that the ego can no longer possess it, and so on. But let us assume that the I and the astral body suddenly had to leave the fully healthy and uninjured physical and etheric bodies, so that they still have the tendency to be possessed by the I and to be similar to the astral body in the highest sense. What would have to happen then?