37. As for the statement that 'the lights will be for signs, and for set times, and for days, and for years', this contains more arcana than can be presented at this point, though no arcanum at all is visible in the sense of the letter. For now only this can be said: Change in spiritual and celestial things takes place both on general and on particular scales, and is comparable to changes that take place through the day and through the year. Changes through the day are from morning to midday, from then on to evening, and through the night to the morning. Changes in the year similar, from spring to summer, from then on to autumn, and through winter to spring. These bring changes in temperature and amount of daylight, and so in the fertility of the earth. Compared to such changes are the changes that take place in spiritual and celestial things. Life without changes and variations would lead to sameness, and so no life at all. Good and truth would not be recognized and identified, let alone perceived. In the Prophets such changes are called 'ordinances', as in Jeremiah,

[Thus] said Jehovah who gives the sun for light by day and the ordinances of the moon and of the stars for light by night, These ordinances will not depart from before Me. Jeremiah 31:35-36.

And in the same prophet,

Thus said Jehovah, If I have not established My covenant of day and night, the ordinances of heaven and earth . . . Jeremiah 33:25.

But these things will in the Lord's Divine mercy be dealt with at Genesis 8:12.

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.

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