Leviticus 10:7-10 New King James Version (NKJV)

7. You shall not go out from the door of the tabernacle of meeting, lest you die, for the anointing oil of the Lord is upon you.” And they did according to the word of Moses.

8. Then the Lord spoke to Aaron, saying:

9. “Do not drink wine or intoxicating drink, you, nor your sons with you, when you go into the tabernacle of meeting, lest you die. It shall be a statute forever throughout your generations,

10. that you may distinguish between holy and unholy, and between unclean and clean,

Leviticus 10