Leviticus 10:8-10

KJV(i) 8 And the LORD spake unto Aaron, saying, 9 Do not drink wine nor strong drink, thou, nor thy sons with thee, when ye go into the tabernacle of the congregation, lest ye die: it shall be a statute for ever throughout your generations: 10 And that ye may put difference between holy and unholy, and between unclean and clean;