Cross reference
Deuteronomy 14:8
8 And the swine, because he parteth the hoof but cheweth not the cud, he is unclean unto you: of their flesh ye shall not eat, and their carcasses ye shall not touch.
Leviticus 11:26-27
26 Every beast which parteth the hoof, and is not clovenfooted, nor cheweth the cud, is unclean unto you: every one that toucheth them shall be unclean.
27 And whatsoever goeth upon its paws, among all beasts that go on all fours, they are unclean unto you: whoso toucheth their carcass shall be unclean until the even.
Isaiah 65:4
4 that sit among the graves, and lodge in the secret places; that eat swine's flesh, and broth of abominable things is in their vessels;
Isaiah 66:3
3 He that killeth an ox is as he that slayeth a man; he that sacrificeth a lamb, as he that breaketh a dog's neck; he that offereth an oblation, `as he that offereth' swine's blood; he that burneth frankincense, as he that blesseth an idol. Yea, they have chosen their own ways, and their soul delighteth in their abominations:
Isaiah 66:17
17 They that sanctify themselves and purify themselves `to go' unto the gardens, behind one in the midst, eating swine's flesh, and the abomination, and the mouse, they shall come to an end together, saith Jehovah.
Luke 15:15-16
15 And he went and joined himself to one of the citizens of that country; and he sent him into his fields to feed swine.
16 And he would fain have filled his belly with the husks that the swine did eat: and no man gave unto him.
2 Peter 2:22
22 It has happened unto them according to the true proverb, The dog turning to his own vomit again, and the sow that had washed to wallowing in the mire.