In no respect whatever can creation itself be attributed to the physical world’s sun: it is due entirely to the spiritual world’s sun. This is because the physical world’s sun is totally lifeless, while the spiritual world’s sun is alive, being the first emanation of divine love and wisdom. Anything that is lifeless does not effect anything on its own, but is activated; so to attribute any aspect of creation to a lifeless sun would be to attribute the work of an artisan to the tool in the artisan’s hand.
The physical world’s sun is nothing but fire, with all its life removed. The spiritual world’s sun is a fire that has divine life within it.
The angelic concept of the fire of the physical world’s sun and the fire of the spiritual world’s sun is like this: divine life is internal to the fire of the spiritual world’s sun and external to the fire of the physical world’s sun. We can see from this that the activity of our physical sun is not autonomous but stems from a living force that emanates from the spiritual world’s sun. Consequently, if the living force of that sun were withdrawn or removed, our sun would fail. This is why the worship of the sun is the lowest of all forms of worship of God. It is just as dead as the sun itself; so in the Word it is called an abomination.
from Divine Love and Wisdom, Section 157