Numbers 31:22-24

International Standard Version

²² concerning anything containing gold, silver, brass, iron, tin, lead, ²³ or anything else that can survive a refiner’s fire: You are to pass it through fire, after which it will be clean. Then it is to be purified with the water of impurity. Everything that cannot survive a refiner’s fire is to be washed in water. ²⁴ Wash your clothes on the seventh day, after which you will be clean. Then you may enter the camp.”