Excerpt from The Lives of Angels pages 131-133

There are good spirits and evil spirits with every individual. We have our union with heaven through the good spirits and our union with hell through the evil ones. These spirits are in the world of spirits, which is intermediate between heaven and hell.

When these spirits come to us, they come into our whole memory and from there into all our thinkingโ€”evil spirits into the matters of memory and thought that are evil, and good spirits into the matters of memory and thought that are good. These spirits are totally unaware that they are with us. Rather, as long as they are, they believe that all these matters of our memory and thought are actually theirs. They do not see us, either, because their sight does not extend to things in our subsolar world.

The Lord takes the greatest care to prevent spirits from knowing whom they are with. If they did know, they would talk with them, and then the evil spirits would destroy them; for evil spirits, being united to hell, want nothing more than to destroy us not only as to spirit (that is, as to our love and faith) but as to our bodies as well. It is different when they do not talk with us. Then they do not know that we are the source of what they are thinkingโ€”and what they are saying to each other, since they talk to each other just the way we doโ€”but believe that these matters are their own. They value and love whatever is their own, so these spirits are constrained to love and value us, even though they do not know it.

This kind of union has become so familiar to me through years of constant experience as to be commonplace.

The reason spirits who are in touch with hell are attached to us as well is that we are born into all kinds of evil, so that our first life is made up of nothing else. Unless spirits of the same kind were associated with us, then, we could not live or be led out of our evils and reformed. So we are kept in our own life by evil spirits and restrained from it by good spirits. Through the two kinds, we are kept in a balance; and since we are in a balance we enjoy an appropriate measure of freedom and can be led out of our evils and turned toward good. This good can be sown in us as well, which could never happen except in our freedom; and the freedom could not be granted us unless spirits from hell were acting on the one side and spirits from heaven on the other, with us in the middle.

I have been shown that to the extent that we exist from our hereditary nature and from ourselves, we could have no life at all if we were not allowed to engage in evil. We would also have no life if we were not in some freedom, and we cannot be compelled to good: anything compelled does not become part of us. I have also been shown that anything good that we accept in freedom is sown in our intentions and becomes virtually our own. This is why we have a communication with hell and a communication with heaven. . . .

The kind of spirit that is associated with us is determined by the kind of person we are in respect to affection and love, though good spirits are assigned to us by the Lord while we ourselves summon the evil ones. The spirits with us change, however, as our own affections change. This means we have one kind with us in infancy, another kind during our childhood, another kind as we are growing up and in early adulthood, and still another kind in old age. During our earliest years, spirits who are in innocence are with us, that is, spirits who are in touch with the heaven of innocence, the inmost or third heaven. In later childhood we are in the company of spirits who are engaged in an affection for knowledge and who are in touch with the ultimate or first heaven. As we are growing up, during our early adulthood, spirits who are responsive to affections for what is true and good and therefore with intelligence are with us. They are spirits who are in touch with the second or intermediate heaven. In old age, though, spirits who are in wisdom and innocence are with us, spirits therefore who are in touch with the inmost or third heaven.