Numbers 19:14
14 “This is the law when someone dies in a tent: everyone who comes into the tent and everyone who is in the tent shall be unclean seven days.
Leviticus 21:1–2
Holiness and the Priests
1 And the Lord said to Moses, “Speak to the priests, the sons of Aaron, and say to them, aNo one shall make himself unclean for the dead among his people, 2 except for his closest relatives, his mother, his father, his son, his daughter, his brother,