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.

1486. 'And [he had] flocks and herds, and asses and menservants, and maidservants and she-asses, and camels' means all things in general which constitute factual knowledge. This is clear from the meaning of all of these in the Word. But what each one means specifically would take far too long to show, that is, to show what is meant by flocks and herds, what by asses and menservants, what by maidservants and she-asses, and what by camels. Each has its own particular meaning, but in general they mean all the things constituting the knowledge that is comprised of cognitions and all those constituting factual knowledge. Regarded in themselves facts are 'asses and menservants'; the pleasures that go with them are 'maidservants and she-asses'; 'camels' are general things of service; 'flocks and herds' are possessions. This applies throughout the Word. All things whatever residing with the external man are nothing else than a body of servants, that is, they exist to serve the internal man. This is how it is with all facts, which belong solely to the external man; for these are acquired from earthly and worldly things by means of sensory impressions so that they might serve the interior or rational man; and that this interior man might serve the spiritual man, the spiritual man the celestial man, and the celestial man the Lord. Thus these exist in subordination to one another as things that are exterior beneath those that are interior; and thus also every single thing exists subordinate to the Lord. Facts therefore are the ultimate and outermost things, in which in their order interior things are inclosed; and because facts are ultimate and outermost things, these more than all other things must be things of service. Anyone may recognize what it is that facts are able to serve if he reflects or asks himself the question, What is their use? When he reflects in this way on the use they serve he may also apprehend the nature of the use. Every fact must exist for the sake of a use, and this is its service.

[1486a] Verse 17 And Jehovah struck Pharaoh with great plagues, and his house, because of Sarai, ¹ Abram's wife.

'Jehovah struck Pharaoh with great plagues' means that facts were destroyed. 'And his house' means which He had gathered together. 'Because of Sarai, ¹ Abram's wife' means because of the truth that was to be allied to the celestial.

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