Numbers 9:6

And Moses said unto his father in law, Because the people come unto me to enquire of God:

And they stood before Moses, and before Eleazar the priest, and before the princes and all the congregation, by the door of the tabernacle of the congregation, saying,

He that toucheth the dead body of any man shall be unclean seven days.

And whosoever toucheth one that is slain with a sword in the open fields, or a dead body, or a bone of a man, or a grave, shall be unclean seven days.

Command the children of Israel, that they put out of the camp every leper, and every one that hath an issue, and whosoever is defiled by the dead:

Hearken now unto my voice, I will give thee counsel, and God shall be with thee: Be thou for the people to God-ward, that thou mayest bring the causes unto God:

And they judged the people at all seasons: the hard causes they brought unto Moses, but every small matter they judged themselves.

Then led they Jesus from Caiaphas unto the hall of judgment: and it was early; and they themselves went not into the judgment hall, lest they should be defiled; but that they might eat the passover.

And a clean person shall take hyssop, and dip it in the water, and sprinkle it upon the tent, and upon all the vessels, and upon the persons that were there, and upon him that touched a bone, or one slain, or one dead, or a grave:

Neither shall he go in to any dead body, nor defile himself for his father, or for his mother;

And the Israelitish woman’s son blasphemed the name of the Lord, and cursed. And they brought him unto Moses: (and his mother’s name was Shelomith, the daughter of Dibri, of the tribe of Dan:)

And they that found him gathering sticks brought him unto Moses and Aaron, and unto all the congregation.

And Moses brought their cause before the Lord.

All the days that he separateth himself unto the Lord he shall come at no dead body. He shall not make himself unclean for his father, or for his mother, for his brother, or for his sister, when they die: because the consecration of his God is upon his head.