Numbers 31:24
“And ye shall wash your clothes on the seventh day, and ye shall be clean, and afterward ye shall come into the camp.”
Only the gold, and the silver, the brass, the iron, the tin, and the lead,
Every thing that may abide the fire, ye shall make it go through the fire, and it shall be clean: nevertheless it shall be purified with the water of separation: and all that abideth not the fire ye shall make go through the water.
And ye shall wash your clothes on the seventh day, and ye shall be clean, and afterward ye shall come into the camp.
And the Lord spake unto Moses, saying,
Take the sum of the prey that was taken, both of man and of beast, thou, and Eleazar the priest, and the chief fathers of the congregation:
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Related Verses
“And do ye abide without the camp seven days: whosoever hath killed any person, and whosoever hath touched any slain, purify both yourselves and your captives on the third day, and on the seventh day.”
“Then the priest shall wash his clothes, and he shall bathe his flesh in water, and afterward he shall come into the camp, and the priest shall be unclean until the even.”
“And the clean person shall sprinkle upon the unclean on the third day, and on the seventh day: and on the seventh day he shall purify himself, and wash his clothes, and bathe himself in water, and shall be clean at even.”
“And he that is to be cleansed shall wash his clothes, and shave off all his hair, and wash himself in water, that he may be clean: and after that he shall come into the camp, and shall tarry abroad out of his tent seven days.”
“He shall purify himself with it on the third day, and on the seventh day he shall be clean: but if he purify not himself the third day, then the seventh day he shall not be clean.”