Genesis 9:20-27

And Noah began to be a man of the ground, and he planted a vineyard. And he drank some of the wine and became drunk, and he exposed himself in the midst of his tent. And Ham, the father of Canaan, saw the nakedness of his father, and he told his two brothers outside. Then Shem and Japheth took a garment, and the two of them put it on their shoulders and, walking backward, they covered the nakedness of their father. And their faces were turned backward, so that they did not see the nakedness of their father. Then Noah awoke from his drunkenness, and he knew what his youngest son had done to him. And he said, “Cursed be Canaan, a slave of slaves he shall be to his brothers.” Then he said, “Blessed be Yahweh, the God of Shem, and let Canaan be a slave to them. May God make space for Japheth, and let him dwell in the tents of Shem, and let Canaan be a slave for him.”