Genesis 9:20-24

And Noah began to cultivate the ground, and he planted a vineyard. And he drank of the wine and became drunk, and he was uncovered and lay naked in his tent. And Ham, the father of Canaan, glanced at and saw the nakedness of his father and told his two brothers outside. So Shem and Japheth took a garment, laid it upon the shoulders of both, and went backward and covered the nakedness of their father; and their faces were backward, and they did not see their father's nakedness. When Noah awoke from his wine, and knew the thing which his youngest son had done to him