321. We need to realize that to all outward appearances, the spiritual world is just like the physical world. You can see lands there, mountains, hills, valleys, plains, fields, lakes, rivers, and springs like the ones in our earthly world; everything, then, that belongs to the mineral kingdom. You can see parks as well, gardens, groves, and woods, with all kinds of trees and shrubs with their fruits and seeds, smaller plants, flowers, herbs, and grasses; everything, then, that belongs to the plant kingdom. You can see all kinds of animals, birds, and fish--everything that belongs to the animal kingdom. The people there are angels and spirits.

This is prefaced to let it be known that the whole spiritual world is just like the whole physical world, the sole difference being that things there are not static and stable the way they are in a physical world because there is nothing of nature there. Everything is spiritual.

228. How keen the perception of angels is in detecting whether anything entering in is contrary to the truth of faith and to good springing from love defies description. The nature of that which enters in and the point at which it does so they perceive a thousand times better than man does himself, who knows scarcely anything about it. Angels are able to perceive more in the smallest degree of a person's thought than he himself in the largest; this is indeed incredible but absolutely true.