'Defile' in the Bible

Whether male or female, send them outside the camp so that they won't defile their camp, because I live among them."

He is not to defile himself on account of his father, mother, brother, and sister when they die, because the crown of his consecration to God is on his head.

You are not to defile the land where you will be living, because I'm living among you. I am the LORD, who lives in Israel."