In the spiritual world where angels and spirits live, there is just as much warmth and light as there is in the physical world where we live. The warmth feels just like warmth and the light looks just like light, as well. Still, the warmth and light of the spiritual world and the warmth and light of the physical world are so different that they have nothing in common, as I have already mentioned [Section 83]. They are as different as life and death. The warmth of the spiritual world is essentially alive, and so is the light; while the warmth of the physical world is essentially dead, and so is the light. The warmth and the light of the spiritual world come from a sun that is nothing but love, while the warmth and light of the physical world come from a sun that is nothing but fire. Love is alive, and divine love is life itself. Fire is dead, and solar fire is death itself. We may call it that because it has absolutely no life in it.
Since angels are spiritual beings, they cannot live in any warmth or any light that is not spiritual. We, on the other hand, cannot live in any warmth or any light that is not physical. This is because what is spiritual suits what is spiritual, and what is physical suits what is physical. If angels were to depend on physical warmth and light to even the least extent, they would be destroyed. It is absolutely wrong for their life.
Each of us is a spirit, as far as the inner levels of our minds are concerned. When we die, we leave this world of nature completely behind. We give up everything it has to offer and enter a world that contains nothing proper to the world of nature. In that world we live so completely distanced from nature that there is no communication along a continuum, that is, nothing like degrees of purity or coarseness.
It is a case of before and after, with no communication except by correspondences. It stands to reason, then, that spiritual warmth is not a purer form of physical warmth, that spiritual light is not a purer form of physical light, but that they are completely different in essence. Spiritual warmth and light derive their essence from a sun that is nothing but love, a sun that is life itself, while physical warmth and light derive their essence from a sun that is nothing but fire, containing no life whatever, as I have already stated [Section 89].
from Divine Love and Wisdom, Sections 89, 90
Section 83: Published 6/3/2018
Section 89: Published 6/6/2018