38. Verse 18 And to have dominion over the day and the night, and to make a distinction between the light and the darkness; and God saw that it was good.

'The day' is used to mean good, and 'the night' evil. Consequently goods are called 'the works of the day', whereas evils are called 'the works of the night'. 'The light' is used to mean truth, and 'the darkness' falsity, just as the Lord says,

Men preferred darkness rather than light; he who does the truth comes to the light. John 3:19-21.

Verse 19 And there was evening, and there was morning, a fourth day.

Animals in the Bible generally refer to spiritual activity, the things we actually do on a spiritual level. "Cattle," as typically used in the Bible, mean a collection of domesticated animals owned by one person or group (including other animals along with cows). It makes sense, then, that cattle would represent the spiritual activities we "own" and have "domesticated."

What are the good things we like to see in ourselves and encourage? What true ideas do we keep in mind, ponder, and use in our decision-making? These can come in great varieties and from many different sources, just as a variety of animals could be part of "cattle," but the key is that we own them, care for them and use them.

(References: Arcana Coelestia 415, 3786, 4105, 4106, 4391, 4440)