Arcana Coelestia #1002
1002. 'Not eating' means not mixing together. This follows from what has been said above. Regarded in itself eating animal flesh is something profane, for in most ancient times people never ate the flesh of any beast or bird, but only different kinds of grain, especially wheaten bread, also the fruit of trees, vegetables, milk, and milk products such as butter. Slaughtering living creatures and eating their flesh was to them abominable, akin to the behaviour of wild animals. Service and use alone was demanded of those creatures, as is clear from Genesis 1:29-30. But in the process of time when mankind began to be as savage as wild animals, indeed more savage, they first began to slaughter living creatures and eat their flesh. And because man had become such, he was permitted to do so and is still permitted today. And insofar as he does so from conscience, it is quite legitimate, for his conscience is given form from all those things he presumes to be true and so legitimate. Consequently nobody nowadays stands in any sense condemned because he eats meat.
Genesis 2:3-7
3
God blessed the seventh day, and made it holy, because he rested in it from all his work which he had created and made.
4
This is the history of the generations of the heavens and of the earth when they were created, in the day that Yahweh God made the earth and the heavens.
5
No plant of the field was yet in the earth, and no herb of the field had yet sprung up; for Yahweh God had not caused it to rain on the earth. There was not a man to till the ground,
6
but a mist went up from the earth, and watered the whole surface of the ground.
7
Yahweh God formed man from the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul.