Numbers 19:12-14

New Revised Standard Version, Anglicised Catholic Edition

¹² They shall purify themselves with the water on the third day and on the seventh day, and so be clean; but if they do not purify themselves on the third day and on the seventh day, they will not become clean. ¹³ All who touch a corpse, the body of a human being who has died, and do not purify themselves, defile the tabernacle of the Lord; such persons shall be cut off from Israel. Since water for cleansing was not dashed on them, they remain unclean; their uncleanness is still on them.

¹⁴ 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 for seven days.