The following regulation applies when a person dies in a tent. Everyone who comes into the tent and everyone who is already in the tent will be unclean for seven days.
If you touch a dead body and don't purify yourself, you make the Tabernacle of the Lord unclean and must be expelled from Israel. You are still unclean because the water of purification hasn't been sprinkled on you, and your uncleanness remains.
However, if someone dies suddenly close to them, making them unclean, they must wait seven days, and on the seventh day when they are made clean again they are to shave their heads.
However, there were some men who were unclean because they had been in contact with a dead body, so they could not keep the Passover on that day. They went to see Moses and Aaron the same day,