Numbers 31:20
You shall purify every garment, every article of skin, all work of goats' hair, and every article of wood."
Genesis 35:2
So Jacob said to his household and to all who were with him, "Put away the foreign gods that are among you and purify yourselves and change your garments.
Exodus 19:10
the LORD said to Moses, "Go to the people and consecrate them today and tomorrow, and let them wash their garments
Numbers 19:14-16
"This is the law when someone dies in a tent: everyone who comes into the tent and everyone who is in the tent shall be unclean seven days.
Numbers 19:22
And whatever the unclean person touches shall be unclean, and anyone who touches it shall be unclean until evening."