Numbers 31:20
As to every garment, and all that is made of skin, and all work of goats' [hair], and all things made of wood, you shall purify yourselves."
Genesis 35:2
Then Jacob said to his household, and to all who were with him, "Put away the foreign gods that are among you, purify yourselves, change your garments.
Exodus 19:10
Yahweh said to Moses, "Go to the people, and sanctify them today and tomorrow, and let them wash their garments,
Numbers 19:14-16
"This is the law when a man 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
"Whatever the unclean person touches shall be unclean; and the soul that touches it shall be unclean until evening."