7 Bible Verses about Contamination

Likewise the person who touches any unclean thing, whether it is a carcase of an unclean beast or a carcase of unclean animal or the carcase of an unclean serpent, even if it is hidden from him, he shall be unclean and guilty.

And whoever the one that has the issue touches and has not washed his hands with water, he shall wash his clothes and bathe himself in water and be unclean until the evening.

Whoever touches the dead body of anyone that is dead and does not remove the sin has defiled the tabernacle of the LORD; and that person shall be cut off from Israel; because the water of separation was not sprinkled upon him, he shall be unclean, and his uncleanness shall be upon him.

Depart ye, depart ye, go ye out from there, touch no unclean thing; go ye out of the midst of her; be ye clean, that bear the vessels of the LORD.

And the LORD spoke unto Moses and unto Aaron, saying, When ye are entered into the land of Canaan, which I give to you in possession, and I put the plague of leprosy in a house of the land of your possession, the one that owns the house shall come and tell the priest, saying, Something like unto a plague has appeared in my house.read more.
Then the priest shall command that they empty the house before the priest goes into it to see the plague so that all that is in the house is not contaminated; and afterward the priest shall go in to recognize the house. And he shall look on the plague, and if the plague is seen in the walls of the house with hollow streaks, greenish or reddish, which appear to be lower than the wall, 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 the seventh day and shall look; and if the plague has spread in the walls of the house, then the priest shall command that they remove the stones in which the plague is, and they shall cast them outside the city into an unclean place; And he shall cause the house to be scraped within round about, and they shall pour out the dust that they scrape off outside the city into an unclean place; and they shall take other stones and put them in the place of the stones that were removed; and he shall take other mortar and shall plaster the house. And if the plague comes again and breaks out in the house after he has taken away the stones and after he has scraped the house and after it is plastered, then the priest shall come in and look; and if the plague appears to have spread in the house, it is a fretting leprosy in the house; it is unclean. Then he shall break down the house, its stones, and its timbers, and all the mortar of the house; and he shall carry them forth out of the city into an unclean place. Moreover he that enters into the house all the while that it is shut up shall be unclean until the evening. And he that sleeps in the house shall wash his clothes, and he that eats in the house shall wash his clothes.

And the LORD spoke unto Moses, saying, Command the sons of Israel that they put out of the camp every leper and every one that has an issue and anyone who is defiled by the dead. Both male and female shall ye put out; ye shall put them outside the camp; that they not defile the camp of those among whom I dwell.read more.
And the sons of Israel did so and put them outside the camp; as the LORD spoke unto Moses, so did the sons of Israel.

but that we write unto them that they abstain from pollutions of idols and from fornication and from things strangled and from blood.