Bosom friendship between the wicked is implacable hatred between them.

It was shown above that everyone has an internal and an external, the internal being called his internal man and the external his external man. To this must be added the fact that the internal man exists in the spiritual world and the external in the natural world. The reason why man was so created is so that he can associate with spirits and angels in their world, and as a result think analytically, and after death be transferred from his own world to the other. The spiritual world means both heaven and hell. Since the internal man is together with spirits and angels in their world, and the external man is among living men, it is plain that a person can consort with the spirits in hell or with the angels in heaven. The ability and power to do this distinguish man from animals. It is what a person is like in his internal man, not in his external man, that determines what he is essentially like, because the internal man is his spirit, and acts by means of the external. The material body, with which his spirit is clothed in the natural world, is an extra, needed for procreation and for the formation of the internal man. For this is formed in the natural body, like a tree in the ground, and a seed in the fruit. More facts about the internal and external man can be seen above (401).