212. As to heaven's form and how it works and flows, this is incomprehensible even to angels. It can be brought to some measure of conceptualization by comparison with the form of all the elements of the human body as explored and examined by someone who is both wise and experienced; for as explained above in the relevant chapters, heaven as a whole resembles a single person (59-72) and everything in the human [body] corresponds to the heavens (87-102). We can see in a general way how incomprehensible and intricate this form is simply by looking at our nerve fibers, which serve to weave absolutely everything [in us] together. There is no way their nature and how they work and flow in the brain can be presented to our eyes, for the countless things involved are so intricate that viewed en masse they look like a soft, undefined lump. Yet actually each and every function of our volition and understanding flows into act through them with perfect definition. We can see how these fibers rejoin in the body by looking at the various plexuses - cardiac, mesenteric, and others - and the nodes called ganglia where many fibers from all over the body come together, combining within these nodes and then exiting in different arrangements to various functions, a pattern that is repeated over and over again. Further, there are similar arrangements in all our viscera, in each member and organ and muscle. Anyone who probes these and other wonders with the eye of wisdom will be utterly stunned; and yet these are the few things that the eye can see, and what it cannot see is more amazing still because it is more inward in nature.
It is abundantly clear that this form corresponds to heaven's form if we consider the way our volition and discernment work in it and according to it, because whatever we intend flows spontaneously into act and whatever we think travels along the fibers from their beginnings to their ends, giving rise to our senses. Further, since this is the form of our thought and intentions, it is the form of our intelligence and wisdom.
It is this form that corresponds to heaven's form. We can learn from this that it is this kind of form that determines the way all the affection and thought of angels reaches out, and that they enjoy intelligence and wisdom to the extent that they are in this form. It may be seen above (78-86) that this form of heaven comes from the Lord's divine human.
These matters have been included so that it may also be known that heaven's form by its very nature can never be fathomed even in a general way and is thus incomprehensible even to angels, as already stated.
