Genesis 9:22-24

King James Version

²² And Ham, the father of Canaan, saw the nakedness of his father, and told his two brethren without.

²³ And Shem and Japheth took a garment, and laid it upon both their shoulders, and went backward, and covered the nakedness of their father; and their faces were backward, and they saw not their father's nakedness.

²⁴ And Noah awoke from his wine, and knew what his younger son had done unto him.