'Purify' in the Bible

This is what you must do to them for their purification: Sprinkle them with the purification water. Have them shave their entire bodies and wash their clothes, and so purify themselves.

“Tell the people: Purify yourselves in readiness for tomorrow, and you will eat meat because you cried before the Lord: ‘Who will feed us meat? We really had it good in Egypt.’ The Lord will give you meat and you will eat.

He is to purify himself with the water on the third day and the seventh day; then he will be clean. But if he does not purify himself on the third and seventh days, he will not be clean.

Anyone who touches a body of a person who has died, and does not purify himself, defiles the tabernacle of the Lord. That person will be cut off from Israel. He remains unclean because the water for impurity has not been sprinkled on him, and his uncleanness is still on him.

But a person who is unclean and does not purify himself, that person will be cut off from the assembly because he has defiled the sanctuary of the Lord. The water for impurity has not been sprinkled on him; he is unclean.

“You are to remain outside the camp for seven days. All of you and your prisoners who have killed a person or touched the dead are to purify yourselves on the third day and the seventh day.

Also purify everything: garments, leather goods, things made of goat hair, and every article of wood.”