Leviticus 10:8

4 Moses summoned Mishael and Elzaphan, sons of Aaron’s uncle Uzziel, and said to them, “Come here; carry the bodies of your cousins outside the camp, away from the front of the sanctuary.”

5 So they came forward and carried them, still in their tunics, outside the camp, as Moses had directed.

6 Then Moses said to Aaron and his sons Eleazar and Ithamar, “Do not let your hair become disheveled and do not tear your garments, or else you will die, and the LORD will be angry with the whole congregation. But your brothers, the whole house of Israel, may mourn on account of the fire that the LORD has ignited.

7 You shall not go outside the entrance to the Tent of Meeting, or you will die, for the LORD’s anointing oil is on you.” So they did as Moses instructed.

8 Then the LORD said to Aaron,

9 “You and your sons are not to drink wine or strong drink when you enter the Tent of Meeting, or else you will die; this is a permanent statute for the generations to come.

10 You must distinguish between the holy and the common, between the clean and the unclean,

11 so that you may teach the Israelites all the statutes that the LORD has given them through Moses.”

12 And Moses said to Aaron and his remaining sons, Eleazar and Ithamar, “Take the grain offering that remains from the offerings made by fire to the LORD and eat it without leaven beside the altar, because it is most holy.

Read all of Leviticus 10