Numbers 31:21

21 Eleazar the priest then spoke to the soldiers who had fought in the battle: "This is the ruling from the Revelation that God gave Moses:

Numbers 31:21 Meaning and Commentary

Numbers 31:21

And Eleazar the priest said unto the men of war, which went to
the battle
To all the soldiers, officers, and common men:

this is the ordinance of the law, which the Lord commanded Moses;
concerning the purification of unclean persons and things, hereby confirming what Moses had said.

Numbers 31:21 In-Context

19 "Now here's what you are to do: Pitch tents outside the camp. All who have killed anyone or touched a corpse must stay outside the camp for seven days. Purify yourselves and your captives on the third and seventh days.

20 Purify every piece of clothing and every utensil - everything made of leather, goat hair, or wood."

21 Eleazar the priest then spoke to the soldiers who had fought in the battle: "This is the ruling from the Revelation that God gave Moses:

22 Gold, silver, bronze, iron, tin, and lead

23 - and anything else that can survive fire - must be passed through the fire; then it will be ritually purified. It must also be ritually washed in the Water-of-Cleansing. Further, whatever cannot survive fire must be put through that water.