147. Verse 21 And Jehovah God caused a deep sleep to fall upon the man, and he fell asleep; and He took one of his ribs, and He closed up the flesh in its place.

'A rib', which is a breast bone, is used to mean man's proprium when it contains very little life, a proprium indeed that he cherishes. 'The flesh in place of the rib' is used to mean the proprium when it does contain some life. 'A deep sleep' is used to mean that state into which he was brought so that he might seem to himself to have a proprium. This state resembles sleep because a person in that state is conscious only of living, thinking, speaking, and acting from himself. But when he starts to realize that this is false, he is aroused from sleep so to speak and wakes up.

Bones are strong and supportive, providing a framework for our bodies and making motion and action possible. They are also the least "alive" part of our bodies, with much of their structure made up of a mineral matrix. As such, they represent a strong, supportive, functional but innately nearly dead part of our spiritual makeup: the "proprium."

The proprium is the part of us that feels life as our own, that perceives our loves and our thoughts as originating within ourselves. If we simply follow the proprium without looking to the Lord, it will lead us to a hellish state, in which we believe ourselves to be all-powerful and deny the existence of the Lord altogether.

Bones, on their own, will go dry, brittle and completely dead. If, however, we acknowledge the Lord and follow him, that's like putting flesh on the bones and being alive. In that case the bones – strong, supportive, protective and as alive as they can be – represent the proprium in relation to intellect, the part of us that perceives our thoughts as our own but turns them toward the Lord.