After the flood, the Bible says that Noah became a husbandman and he planted a vineyard. He drank wine made from this vineyard, and got drunk; and lay “uncovered” within his tent. Noah’s son Ham, the father of Canaan, saw his father naked and told his brothers, which led to Ham’s son Canaan being cursed by Noah. As early as the Classical era, commentators on Genesis 9:20–21 have excused Noah’s excessive drinking because he was considered to be the first wine drinker; the first person to discover the effects of wine. John Chrysostom, Archbishop of Constantinople, and a Church Father, wrote in the 4th century that Noah’s behavior is defensible: as the first human to taste wine, he would not know its effects: “Through ignorance and inexperience of the proper amount to drink, fell into a drunken stupor”.
Source: Noah – Wikipedia