Seven days of purification

19And you, camp outside the camp for seven days. Everyone who has killed a person, and everyone who has touched one slain, shall purify yourselves on the third day and on the seventh day—you and your captives.

20And every garment, and every article of leather, and every work of goats’ hair, and every article of wood, you shall purify.

21Then Eleazar the priest said to the men of the army who had come to the battle, “This is the statute of the law that Yahweh commanded Moses:”

22Only the gold, the silver, the bronze, the iron, the tin, and the lead—

23Everything that can go through the fire, you shall pass through the fire, and it shall be clean; only it must be purified with the water for impurity. But everything that cannot go through the fire, you shall pass through the water.

24You shall wash your clothes on the seventh day, and you shall be clean; afterward you may come into the camp.