So Jacob said to his household and to everyone who was with him, “Get rid of the foreign gods that are among you. Cleanse yourselves and change your clothes.
He told them, “You are the heads of the Levitical families. Sanctify yourselves, you and your kinsmen, so that you may bring up the Ark of Adonai, the God of Israel, to the place that I have prepared for it.
Not a hand is to touch it, but he will surely be stoned or shot through. Whether it is an animal or a man, it will not live.’ When the shofar sounds, they may come up to the mountain.”
and anything able to pass through fire is to be put through the fire and will then be clean. It is also to be purified with the water of cleansing. Anything that cannot stand the fire is to be put through the water.
The kohen answered David saying, “There is no common bread on hand, but there is consecrated bread—so long as the young men have kept themselves from women.”