7 Bible Verses about Contamination

or if anyone touches an unclean thing, whether a carcass of an unclean wild animal or a carcass of unclean livestock or a carcass of unclean swarming things, and it is hidden from him and he has become unclean, and he realizes his guilt;

Anyone whom the one with the discharge touches without having rinsed his hands in water shall wash his clothes and bathe himself in water and be unclean until the evening.

Whoever touches a dead person, the body of anyone who has died, and does not cleanse himself, defiles the tabernacle of the LORD, and that person shall be cut off from Israel; because the water for impurity was not thrown on him, he shall be unclean. His uncleanness is still on him.

Depart, depart, go out from there; touch no unclean thing; go out from the midst of her; purify yourselves, you who bear the vessels of the LORD.

The LORD spoke to Moses and Aaron, saying, "When you come into the land of Canaan, which I give you for a possession, and I put a case of leprous disease in a house in the land of your possession, then he who owns the house shall come and tell the priest, 'There seems to me to be some case of disease in my house.'read more.
Then the priest shall command that they empty the house before the priest goes to examine the disease, lest all that is in the house be declared unclean. And afterward the priest shall go in to see the house. And he shall examine the disease. And if the disease is in the walls of the house with greenish or reddish spots, and if it appears to be deeper than the surface, then the priest shall go out of the house to the door of the house and shut up the house seven days. And the priest shall come again on the seventh day, and look. If the disease has spread in the walls of the house, then the priest shall command that they take out the stones in which is the disease and throw them into an unclean place outside the city. And he shall have the inside of the house scraped all around, and the plaster that they scrape off they shall pour out in an unclean place outside the city. Then they shall take other stones and put them in the place of those stones, and he shall take other plaster and plaster the house. "If the disease breaks out again in the house, after he has taken out the stones and scraped the house and plastered it, then the priest shall go and look. And if the disease has spread in the house, it is a persistent leprous disease in the house; it is unclean. And he shall break down the house, its stones and timber and all the plaster of the house, and he shall carry them out of the city to an unclean place. Moreover, whoever enters the house while it is shut up shall be unclean until the evening, and whoever sleeps in the house shall wash his clothes, and whoever eats in the house shall wash his clothes.

The LORD spoke to Moses, saying, "Command the people of Israel that they put out of the camp everyone who is leprous or has a discharge and everyone who is unclean through contact with the dead. You shall put out both male and female, putting them outside the camp, that they may not defile their camp, in the midst of which I dwell."read more.
And the people of Israel did so, and put them outside the camp; as the LORD said to Moses, so the people of Israel did.

but should write to them to abstain from the things polluted by idols, and from sexual immorality, and from what has been strangled, and from blood.