Numbers 31:19-21

Lexham English Bible

¹⁹ And you, camp outside the camp seven days; all who killed a person and all who touched the slain purify yourselves on the third day and on the seventh day, you and your captives. ²⁰ You will purify yourselves and every garment and every object of hide and all the work of goats’ hair, and every object of wood.”

²¹ Then Eleazar the priest said to the men of the battle who came from the war, “This is the decree of the law that Yahweh commanded Moses.