Leviticus 10:8-10

American Standard Version

⁸ And Jehovah spake unto Aaron, saying, ⁹ Drink no wine nor strong drink, thou, nor thy sons with thee, when ye go into the tent of meeting, that ye die not: it shall be a statute for ever throughout your generations: ¹⁰ and ^[a]that ye may make a distinction between the holy and the common, and between the unclean and the clean;