Cross reference
Numbers 19:15
15 and every open vessel which hath no covering of thread upon it is unclean.
Leviticus 11:32
32 `And anything on which any one of them falleth, in their death, is unclean, of any vessel of wood or garment or skin or sack, any vessel in which work is done is brought into water, and hath been unclean till the evening, then it hath been clean;
Numbers 31:20
20 and every garment, and every skin vessel, and every work of goats' `hair', and every wooden vessel, ye yourselves cleanse.'
Leviticus 14:36
36 and the priest hath commanded, and they have prepared the house before the priest cometh in to see the plague (that all which `is' in the house be not unclean), and afterwards doth the priest come in to see the house;