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The Sin of Nadab and Abihu
8And Jehovah spake unto Aaron, saying, 9Drink 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: 10and that ye may make a distinction between the holy and the common, and between the unclean and the clean; 11and that ye may teach the children of Israel all the statutes which Jehovah hath spoken unto them by Moses.
Leviticus 10:8-11 (ASV)