Although the sun of the world is not seen in heaven, nor anything from that sun, there is nevertheless a sun there, and light and heat, and all things that are in the world, with innumerable others, but not from a like origin; since the things in heaven are spiritual, and those in the world are natrual. The sun of heaven is the Lord; the light there is the Divine truth and the heat the Divine good that go forth from the Lord as a sun ...
The light of heaven is not a natural light, like the light of the world, but a spiritual light, because it is from the Lord as a sun, and that sun is the Divine love (as has been shown in the foregoing chapter). That which goes forth from the Lord as a sun is called Divine truth, but in its essence it is Divine good united to Divine truth. From this the angels have light and heat, light from Divine truth, and heat from Divine good. As the light of heaven, and the heat also, are from such a source, it is evident that they are spiritual and not natural.