2996. In this world it is a great secret, although in the other life nothing is better known to every spirit, that all things in the human body have a correspondence to those in heaven; insomuch that there is not the smallest particle in the body, to which something spiritual and celestial does not correspond; or what is the same, to which heavenly societies do not correspond, for these exist according to all the genera and species of spiritual and celestial things; and this in such an order that together they represent one man, even as to all his parts, in general and in particular, both the interior and the exterior. Hence it is that the universal heaven is also called the Grand Man; and hence it is that it has been so often said that one society belongs to one province of the body, another to another, and so on. The reason is that the Lord is the Only Man, and heaven represents Him; and the Divine good and truth that are from Him are what make heaven; and because the angels are therein, they are said to be in the Lord. But they who are in hell are outside this Grand Man, and correspond to things unclean, and also to bodily corruptions.