There are two worlds, one spiritual and one physical; and the spiritual world does not derive anything from the physical one, nor does the physical one derive anything from the spiritual one. They are completely distinct from each other, communicating only by means of correspondence, whose nature has been amply explained elsewhere. The following example may be enlightening. Warmth in the physical world is the equivalent of the good that thoughtfulness does in the spiritual world, and light in the physical world is the equivalent of the truth that faith perceives in the spiritual world. No one can fail to see that warmth and the goodness of being thoughtful, and light and the truth of faith, are completely distinct from each other.
At first glance, they seem as distinct as two quite different things. That is what comes to the fore when we start thinking about what the goodness of being thoughtful has in common with warmth and what the truth of faith has in common with light. Yet spiritual warmth is that very “goodness” and spiritual light is that very “truth.”
In spite of the fact that they are so distinct from each other, though, they still make a single whole by means of their correspondence. They are so united that when we read about warmth and light in the Word, the spirits and angels who are with us see thoughtfulness in the place of warmth and faith in the place of light.
I include this example to make it clear that the two worlds, the spiritual one and the physical one, are so distinct from each other that they have nothing in common, and that still they have been created in such a way that they communicate with each other and are actually united through their correspondence.
Because these two worlds are so distinct each other, it is quite obvious that the spiritual world is under a different sun that is the physical world. There is just as much warmth and light in the spiritual world as there is in the physical world, but the warmth there is spiritual and so is the light. Spiritual warmth is the good that thoughtfulness does and spiritual light is the truth that faith perceives.
Now, since the only possible source of warmth and light is a sun, it stands to reason that there is a different sun in the spiritual world than there is in the physical world. It also stands to reason that because of the essential nature of the spiritual world’s sun, spiritual warmth and light can come forth from it, while because of the essential nature of the physical world’s sun, physical warmth and the light can come forth from it. The only possible source of anything spiritual–that is, anything that has to do with what is good and true–is divine love and wisdom. Everything good is a result of love and everything true is a result of wisdom. Any wise individual can see that this is their only possible source.
from Divine Love and Wisdom, Sections 83, 84