Thanks for the response.

I don't think of Adam as a concept, rather a level of being, probably what Christians call the soul. There is a slight problem in that Adam at Genesis 1.26 seems to be singular, whereas the later Fall would refer to numerous souls. I therefore have to assume that Adam there is a type of collective noun which encompasses many individuals. Following the disobedience and the Fall the spiritual Adam has of course become a physical being.

I believe that in this process of the fall from a state of pure consciousness to the material level, the soul acquires various 'bodies'. Names given to these according to various traditions are causal, higher mental, lower mental, astral, etheric and possibly others. A human is therefore multi-levelled, although most of the time we remain unaware of the other levels.