Numbers 19:15

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

Leviticus 11:32

And whatever shall fall on any of them when they are dead, shall be unclean, whether any vessel of wood, or clothing, or skin, or sack; whatever vessel in which work is done, it must be put into water, and it shall be unclean to the evening. So it shall be cleaned.

Numbers 31:20

And purify all clothing, and all that is made of skin, 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 to see the plague, so that all that is in the house may not become unclean. And afterwards the priest shall go in to see the house.

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