Deut. 14:8 And the swine, because it divideth the hoof, yet cheweth not the cud, it is unclean unto you: ye shall not eat of their flesh, nor touch their dead carcass.
https://pocketcollege.com/transcript/RR130Z48.html
IBL06: Sixth Commandment
Dietary Laws
Deuteronomy 14:1-21, dietary rules.
“14 Ye are the children of the Lord your God: ye shall not cut yourselves, nor make any baldness between your eyes for the dead.
2 For thou art an holy people unto the Lord thy God, and the Lord hath chosen thee to be a peculiar people unto himself, above all the nations that are upon the earth.
3 Thou shalt not eat any abominable thing.
4 These are the beasts which ye shall eat: the ox, the sheep, and the goat,
5 The hart, and the roebuck, and the fallow deer, and the wild goat, and the pygarg, and the wild ox, and the chamois.
6 And every beast that parteth the hoof, and cleaveth the cleft into two claws, and cheweth the cud among the beasts, that ye shall eat.
7 Nevertheless these ye shall not eat of them that chew the cud, or of them that divide the cloven hoof; as the camel, and the hare, and the coney: for they chew the cud, but divide not the hoof; therefore they are unclean unto you.
8 And the swine, because it divideth the hoof, yet cheweth not the cud, it is unclean unto you: ye shall not eat of their flesh, nor touch their dead carcase.
9 These ye shall eat of all that are in the waters: all that have fins and scales shall ye eat:
10 And whatsoever hath not fins and scales ye may not eat; it is unclean unto you.
11 Of all clean birds ye shall eat.
12 But these are they of which ye shall not eat: the eagle, and the ossifrage, and the ospray,
13 And the glede, and the kite, and the vulture after his kind,
14 And every raven after his kind,
15 And the owl, and the nighthawk, and the cuckow, and the hawk after his kind,
16 The little owl, and the great owl, and the swan,
17 And the pelican, and the gier eagle, and the cormorant,
18 And the stork, and the heron after her kind, and the lapwing, and the bat.
19 And every creeping thing that flieth is unclean unto you: they shall not be eaten.
20 But of all clean fowls ye may eat.
21 Ye shall not eat of anything that dieth of itself: thou shalt give it unto the stranger that is in thy gates, that he may eat it; or thou mayest sell it unto an alien: for thou art an holy people unto the Lord thy God. Thou shalt not seethe a kid in his mother's milk.”
Eating and drinking together with every other aspect of life is regulated by biblical law.
Also, on the laws governing sanitation: https://pocketcollege.com/transcript/RR172L22.html
Most of the comments on Leviticus 11 by Biblical scholars are embarrassing to read. We are told that these laws were given just because there was a lack of refrigeration in those days. Most of these laws cannot be related to any lack of refrigeration. Another seminary professor sees the laws as symbolic in their meaning, and he writes for example, “In Leviticus 11, meditation which is pictured by chewing the cud, is a primary mark of cleanness.” Well, if God wanted us to meditate, He wouldn’t give us these animals and say, “Understand that this is the meaning of it.” He would’ve said, “Meditate!” This is the kind of absurdity that is so commonplace. And yet they assure us, these people, that, “{?} the strongest aspect of the dietary regulations is symbolic.”
One Dutch scholar, {?}, is wiser. He says, “Implicit in these verses is the notion that uncleanness was something contagious.” Leviticus has given us the basic laws concerning sanitation and contagion which have governed Christendom and greatly furthered the protection of society. Some of the regulations set forth in these verses are,
1. Dead animals and insects pollute. They can carry contagion. Whatever they touch must be washed and the person must bathe before nightfall, or at nightfall
2. Porous pottery must be broken. What can be washed must be, but porous items can absorb infection.
3. Death is a form of pollution; it comes from ailments. It’s not a natural fact of creation, but a product of the fall and hence, it means something is wrong. As a general rule, death is seen as involving disease, and hence cleansing is the rule.
4. All creeping things: mice, rats and the like, are forbidden as food.
5. Physical contact can convey contagion.
6. Health is a goal of holiness. Because the resurrection of the body is our future. Now, this does not mean sickness is sin, but that it is a result of a fallen and sinful world. We must seek holiness and health. God requires this of us as His right over us.
A great many of these regulations and others came into particular rule, although widely observed in Christendom, with Romanticism. Romanticism also revived ancient dietary rule—ah, ideas, and gave them more prominence—pagan dietary ideas. The reason for it was that Romanticism reduced life to feeling. It had a basic hostility to rules and to regulations. I think it’s a very interesting fact that one of the things that suddenly came to the fore with the rise of Romanticism was Tuberculosis. No one has bothered to study that fact, although some commentators have noted that there was a coincidence. Nobody has explored it. But the fact is, Romanticism began to deny the validity of all kinds of rules, rules that the Bible had set down with regard to health and to sanitation. It reduced life to feeling. It was hostile to Law. It regarded the orderly life of Law as repressive and at best, inferior. The nature of man was said to reveal itself in passions, not in the submissive life of virtue, law, and reason.