Leviticus 10:8-11

Then the LORD said to Aaron, “You and your descendants must never drink wine or any other alcoholic drink before going into the Tabernacle. If you do, you will die. This is a permanent law for you, and it must be observed from generation to generation. You must distinguish between what is sacred and what is common, between what is ceremonially unclean and what is clean. And you must teach the Israelites all the decrees that the LORD has given them through Moses.”