3629. Few are able to believe that all this is so, for the reason that they do not know what the spiritual is and what the natural is, let alone what distinguishes one from the other. Also, they do not know what correspondence is and what influx is, and that when the spiritual flows into the organic forms belonging to the body, it establishes the living workings such as occur there. Nor do they know that without such influx and correspondence not even the smallest parts of the body can have life or be set in motion. These things I have learned about from actual experience, which has shown me not only that heaven in general flows in but also that specific communities do so; also which communities, and the character of those flowing into this or that organ of the body, and into this or that limb. It has shown me that not one community but very many flow into any one organ or limb, and that each community consists of very many angels; for the more angels there are the better and stronger the correspondence, since perfection and strength are the product of a like-minded multitude of many individuals who in the heavenly form act as one. This accordance of the many leads to a more perfect and stronger endeavour acting into individual parts.