Genesis 9:22-24

Amplified Bible

²² Ham, the father of Canaan, saw [by accident] the nakedness of his father, and [to his father’s shame] told his two brothers outside. ²³ So Shem and Japheth took a robe and put it on both their shoulders, and walked backwards and covered the nakedness of their father; their faces were turned away so that they did not see their father’s nakedness. ²⁴ When Noah awoke from his wine [induced stupor], he knew what his younger son [Ham] had done to him.