The Lord said to Moses: “Speak to Aaron’s sons, the priests, and tell them: A priest is not to make himself ceremonially unclean for a dead person among his relatives,
Anyone who touches a body of a person who has died, and does not purify himself, defiles the tabernacle of the Lord. That person will be cut off from Israel. He remains unclean because the water for impurity has not been sprinkled on him, and his uncleanness is still on him.
“Command the Israelites to send away anyone from the camp who is afflicted with a skin disease, anyone who has a bodily discharge, or anyone who is defiled because of a corpse.
“If someone suddenly dies near him, defiling his consecrated head of hair, he must shave his head on the day of his purification; he is to shave it on the seventh day.
But there were some men who were unclean because of a human corpse, so they could not observe the Passover on that day. These men came before Moses and Aaron the same day