Leviticus 10:7-9

New Century Version

⁷ but you must not even leave the Meeting Tent. If you go out of the entrance, you will die, because the Lord has appointed you to his service.” So Aaron, Eleazar, and Ithamar obeyed Moses.

⁸ Then the Lord said to Aaron, ⁹ “You and your sons must not drink wine or beer when you go into the Meeting Tent. If you do, you will die. This law will continue from now on.