Deuteronomy 14:8
And also the pig, because even though its hoof is divided, it does not chew the cud. It is therefore unclean for you. You must not eat their meat or even touch their carcasses.
Leviticus 11:26-27
"Any animal that has divided hooves and is cloven-footed but doesn't chew the cud is unclean for you. Anyone who touches them is unclean.
Isaiah 65:4
who sit among graves, and spend the night in secret places; who eat pigs' meat, with the broth of detestable things in their pots;
Isaiah 66:3
"Whoever slaughters an ox is just like one who kills a human being; whoever sacrifices a lamb is just like one who breaks a dog's neck; whoever makes a grain offering is just like one who offers pig's blood; and whoever makes a memorial offering of frankincense is just like one who blesses an idol. Yes, these have chosen their own ways, and they take delight in their contaminated actions.
Isaiah 66:17
"Those who consecrate and purify themselves to enter the groves, following the one at the center of those who eat the meat of pigs, disgusting things, and rats, are all alike," says the LORD.
Luke 15:15-16
So he went out to work for one of the citizens of that country, who sent him into his fields to feed pigs.
2 Peter 2:22
The proverb is true that describes what has happened to them: "A dog returns to its vomit," and "A pig that is washed goes back to wallow in the mud."