By that Sun visible to the angels, from which they have heat and light, is not understood the Lord Himself, but there is understood the first proceeding from Him, which is the fulness of spiritual heat. The fulness of spiritual heat is spiritual fire, which is the Divine Love and Wisdom in its first correspondence. And so it is that that Sun appears fiery, and to the angels is also fiery, but not to men. Fire which is fire to men is not spiritual, but natural; between those fires there is a distinction like that between what is living and what is dead. Wherefore the spiritual Sun by its heat vivifies spiritual beings and renews spiritual things. But the natural sun indeed does the same for natural beings and natural things, yet not from itself, but by means of influx of spiritual heat to which it brings subsidiary power.