Numbers 19:15

And every open vessel, which has no covering fastened upon it, is unclean.

Leviticus 11:32

And upon whatsoever any of them, when they are dead, does fall, it shall be unclean; whether it be any vessel of wood, or clothing, or skin, or sack, whatsoever vessel it be, wherein any work is done, it must be put into water, and it shall be unclean until the evening; so it shall be cleansed.

Numbers 31:20

And purify all your clothing, and all that is made of skins, and all work of goats' hair, and all things made of wood.

Leviticus 14:36

Then the priest shall command that they empty the house, before the priest goes into it to see the disease, that all that is in the house be not made unclean: and afterward the priest shall go in to see the house:

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