In Genesis 1:24, beasts signify the things of man's will or loves. (Arcana Coelestia 44, 46)

In Genesis 9:10, beasts signify all that was living in the man of the Ancient Church, and also what belonged to his new will; likewise the lower things of his understanding and the will therefrom. (Arcana Coelestia 1026-1029)

In Psalm 104:20, beasts signify affections longing to be instructed, or spiritually nourished. (Apocalypse Explained 650[10])

In Luke 10:35, since the beast was a donkey, this signifies to instruct another according to his capability. (Apocalypse Explained 1154)

The beast of the south (Isaiah 30:6) signifies people who are principled in the knowledges of good and of truth, but do not apply them to life and instead to science.

Every beast and creeping thing (Genesis 8:19) signifies the goodnesses of the internal and external man.

"Beasts" represent the affection for doing good things, a true desire to do them from the heart. In the negative sense, "beasts" stand for the lust to do evil.

The beast ascending out of the sea (Revelation 13:1) signifies reasonings from the natural man confirming the separation of faith from life.

(References: Apocalypse Explained 13, 773; Revelation 13:11)

1530. The truth of this could be proved to anyone from the Word, for example, when the Lord revealed Himself to Peter, James, and John, for His face at that time shone like the sun and His garments became white as the light, Matthew 17:2. The sole reason why He appeared to them in this way was that their interior sight had been opened. The same is also confirmed from the Prophets, as in Isaiah when reference is being made to the Lord's kingdom in heaven,

The light of the moon will be as the light of the sun, and the light of the sun will be sevenfold, as the light of seven days. Isaiah 30:26.

And in John, where reference is being made to the Lord's kingdom which is called the New Jerusalem,

The city has no need of the sun or of the moon to shed light in it; for the glory of God gives it light, and its lamp is the Lamb. Revelation 21:23.

And elsewhere in the same book,

There will be no night there, nor do they need a lamp or light of the sun, for the Lord God gives them light. Revelation 22:5.

And in addition when the Lord appeared to Moses, Aaron, Nadab, Abihu, and the seventy elders, it is said that they saw the God of Israel under whose feet there was so to speak a paved work of sapphire stone, like the substance of the sky for clearness, Exodus 24:10. Because the Lord's celestial and spiritual appears before the external sight of the angels as the Sun and the Moon, 'the sun' in the Word therefore means what is celestial, and 'the moon' what is spiritual.