Numbers 31:21-23

Darby Translation

²¹ And Eleazar the priest said to the men of war that had gone to the battle, This is the statute of the law which Jehovah hath commanded Moses.

²² Only the gold, and the silver, the copper, the iron, the tin, and the lead,

²³ everything that passeth through the fire, ye shall make it go through the fire, and it shall be clean; only it shall be purified with the water of separation; and everything that cannot pass through the fire ye shall make go through the water.