Anyone in the open field who touches a person who has been killed by the sword or has died, or who even touches a human bone, or a grave, will be unclean for seven days.
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,
“You are to remain outside the camp for seven days. All of you and your prisoners who have killed a person or touched the dead are to purify yourselves on the third day and the seventh day.
“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.
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
“Woe to you, scribes and Pharisees, hypocrites! You are like whitewashed tombs, which appear beautiful on the outside, but inside are full of dead men’s bones and every impurity.