Leviticus 10:9

Drunk. Hebrew shekar; which the Septuagint and Vulgate commonly translate by sicera, any strong liquor, (St. Jerome) particularly palm-wine. (St. Chrysostom in Isai. v. 11.) Jonathan says old wine. Hecateus assures us, that the Jews drink no wine at all in the temple. But the Rabbins admit of some exceptions. This abstinence was prescribed by any other nations to their priests and magistrates in office. (Calmet) --- The intent of the law, is to prevent any mistake arising from the fumes of wine, (ver. 10,) as likewise all drowsiness or foolish mirth. As mourning and excessive grief are prohibited on the one hand; so are intoxicating liquors, on the other. (Haydock)