Leviticus 10:8-11 NIV

8 Then the LORD said to Aaron,
9 “You and your sons are not to drink wine or other fermented drink whenever you go into the tent of meeting, or you will die. This is a lasting ordinance for the generations to come,
10 so that you can distinguish between the holy and the common, between the unclean and the clean,

References for Leviticus 10:10

11 and so you can teach the Israelites all the decrees the LORD has given them through Moses.”

References for Leviticus 10:11