'Defile' in the Bible

For I am the Lord your God; so consecrate yourselves and be holy, for I am holy. You shall not make yourselves unclean with any of the swarming things that swarm or crawls on the ground.

You shall not have intimate relations with your neighbor’s wife, to be defiled with her.

You shall not have intimate relations with any animal to be defiled with it; nor shall a woman stand before an animal to mate with it; it is a perversion.

‘Do not defile yourselves by any of these things; for by all these the nations which I am casting out before you have become defiled.

[do none of these things] so that the land will not vomit you out, should you defile it, as it has vomited out the nation which has been before you.

So keep My command: do not practice any of the repulsive customs which have been practiced before you, so as not to defile yourselves by them; I am the Lord your God.’”

Then the Lord said to Moses, “Speak to the priests, the sons of Aaron, and say to them:‘No one shall defile himself [that is, become ceremonially unclean] for the dead among his people [by touching a corpse or assisting in preparing it for burial],

He shall not become unclean as a relative by marriage among his people, and so profane himself.

nor shall he approach any dead person, nor defile himself [by doing so, even] for his father or for his mother;