Numbers 31:22-24

New International Version

²² Gold, silver, bronze, iron,^(A) tin, lead ²³ and anything else that can withstand fire must be put through the fire,^(B) and then it will be clean. But it must also be purified with the water of cleansing.^(C) And whatever cannot withstand fire must be put through that water. ²⁴ On the seventh day wash your clothes and you will be clean.^(D) Then you may come into the camp.^(E)”