The houses of good spirits and angelic spirits usually have porticoes, or long entryways, vaulted and sometimes doubled, where they walk. The walls of the walkways are formed in many different ways and are graced with flowers and flower garlands woven in an extraordinary manner, not to mention other kinds of decoration that change and replace one another, as noted. These details appear to them in brighter light at one time, in weaker light at another, but always offering profound pleasure.
Their houses also turn more beautiful as the spirits grow in perfection. When the houses are undergoing change, something representing a window appears at the side and widens, and the inside grows darker. A piece of starry sky appears, as does a kind of cloud, which is a sign that their houses are changing into even more enchanting ones.
Spirits are quite disgusted by the poor opinion people have of the life that spirits and angels enjoy. They are upset to know that we imagine them as existing in a dim, obscure state (which would have to be awfully grim) and inhabiting a kind of vacuum or void. The truth is that they have the greatest possible light, enjoy every benefit available to each of the senses, and feel it very deeply.
There were also some souls just come from the world who brought with them (from assumptions they had adopted there) the idea that such vitality was not possible in the other world. As a result, they were taken into angel homes, where they talked with the angels and saw what was there. When they returned, they kept saying, “I can see it’s true!” “Those things are real!” “I would never have believed this during life in the body. I never could have.” They said that these have to be some of the most amazing things that exist, but no one believes in such things because no one understands them. Just because they do not understand it—and this is something they are told—they should not doubt it, since it is a matter to be experienced by the senses (the inner senses, at any rate). After all, if we believed only what we could grasp, we would not believe in anything at the microscopic level of the physical world, let alone anything having to do with eternal life.
That is what produces the insanity of our era.
from Secrets of Heaven, Sections 1629, 1630