414. So that a third of the day did not shine, and likewise the night. This symbolically means that they no longer have in them any spiritual truth or natural truth from the Word serviceable for doctrine and life.

The day's not shining means that they had no light from the sun, and "likewise the night" means that they had no light from the moon and stars. Light in general symbolizes Divine truth, which is truth from the Word. The light of the sun symbolizes spiritual Divine truth, and the light of the moon and stars symbolizes natural Divine truth, both acquired from the Word. Divine truth in the spiritual sense of the Word is like the light of the sun during the day, and Divine truth in the natural sense of the Word is like the light of the moon and stars at night. The spiritual sense of the Word, moreover, flows into its natural sense, as the sun does with its light to the moon, and this reflects the light of the sun indirectly.

In this way also does the spiritual sense of the Word enlighten people, even people who know nothing of that sense, when they read the Word in its natural sense. However, it enlightens a spiritual person as light from the sun does his eye, but a natural person as light from the moon and stars does his eye. Everyone is enlightened in accordance with his spiritual affection for truth and goodness, and at the same time in accordance with the genuine truths by which he has opened his rational faculty.

[2] Day and night also have this meaning in the following places:

God said, "Let there be lights in the firmament of the heavens to divide the day from the night...." Then God made two great lights: the greater light to rule by day, and the lesser light to rule by night. He made the stars also. And God set them in the firmament of the heavens to give light on the earth, and to rule by day and by night, and to divide the light from the darkness. (Genesis 1:14-19)

(Jehovah) made great lights..., the sun to rule by day..., the moon and stars to rule by night... (Psalms 136:7-9)

The day is Yours, (O Jehovah,) the night also is Yours; You have prepared the light and the sun. (Psalms 74:16)

...Jehovah... gives the sun for a light by day, the ordinances of the moon and the stars for a light by night... (Jeremiah 31:35)

If you can break My covenant with the day and My covenant with the night, so that there will not be day and night in their season, then My covenant also may be broken with David My servant... If I have not appointed My covenant with day and night, the ordinances of heaven and earth, I also will reject the offspring of Jacob and David... (Jeremiah 33:20-21, 25-26)

I cite these passages to make known that the darkening of both kinds of light is meant.

919. 21:23 The city had no need of the sun or of the moon to shine in it, for the glory of God illuminated it, and the Lamb is its lamp. This symbolically means that people of the New Church will not be caught up in self-love and their own intelligence and so possess a natural sight only, but from the Word's Divine truth will possess a spiritual light from the Lord alone.

The sun here symbolizes natural love divorced from spiritual love, which is self-love. And the moon symbolizes a natural intelligence and faith divorced from a spiritual intelligence and faith, which is one's native intelligence and a self-made faith. This is the love and the intelligence and faith symbolized by the sun and moon here, which people of the Lord's New Church will have no need of to light their sight.

The glory of God which illumines the city symbolizes the Word's Divine truth (no. 629), and because that illumination or enlightenment comes from the Lord, we are told as well that the Lamb is its lamp.

The symbolism here is similar to that found in the following verses in Isaiah:

You shall call your walls salvation, and your gates praise. The sun shall no longer be your light by day, nor for brightness shall the moon give light to you; but Jehovah will be to you an everlasting light, and your God your glory. Your sun shall no longer go down, nor shall your moon wane; for Jehovah will be your everlasting light... Your people shall all be righteous. (Isaiah 60:18-21)

The sun and moon that will no longer give light mean self-love and one's native intelligence. And the sun and moon that will no longer go down mean love from the Lord for the Lord, and an intelligence and faith from Him. That Jehovah will be an everlasting light has the same symbolic meaning as what is said here, that the glory of God will illumine the city and the Lamb be its lamp.

That the sun symbolizes love for the Lord, and in an opposite sense self-love, may be seen in nos. 53 and 414 above. And that the moon symbolizes intelligence from the Lord and faith from Him, in nos. 332, 413, 414. Thus the moon in an opposite sense symbolizes one's native intelligence and a self-made faith.

Since the sun in an opposite sense symbolizes self-love, and the moon one's native intelligence and a self-made faith, therefore it was an abomination to worship the sun, moon and stars, as may be seen in Jeremiah 8:1-2.