In Genesis 9:13, this signifies the state of light in obscurity of the regenerate spiritual man. (Arcana Coelestia 1042)

In Exodus 13:21, this signifies a state of enlightenment tempered by obscurity in respect to truth. (Arcana Coelestia 81-86)

In Psalm 147:8, this signifies that the Lord defends and preserves the spiritual meanings of the Word by the natural truths in through the Bible's literal sense. (Apocalypse Explained 594[12])

In Isaiah 60:8, this signifies to search and investigate truth from the Word's literal sense. (Apocalypse Explained 282[5])

In Isaiah 19:1, the phrase 'Jehovah rides upon a light cloud, and comes into Egypt', signifies the visitation of the natural man from spiritual-natural Divine Truth, for a visitation is an examination into the quality of a man, and examination is made by means of Divine Truth. A light cloud denotes the spiritual-natural Divine Truth from which the quality of man as to his natural-self becomes evident.

(Odkazy: Apocalypse Explained 654)

126. Light and Warmth in Heaven

People who think solely on the basis of nature cannot grasp the fact that there is light in the heavens; yet in the heavens there is so much light that it is vastly greater than noonday light on earth. I have seen it often, even during our evenings and nights. At first I was amazed when I heard angels saying that our world's light was nothing but shadow in comparison to heaven's light, but now that I have seen it, I myself can bear witness. Its brightness and brilliance are beyond description. What I have seen in heaven I have seen in that light, and therefore more clearly and distinctly than what I have seen in this world.