Genesis 9:22-24

And Ham, the father of Canaan, went into the tent and gazed on his shamefully exposed father. Then he went out and informed his brothers. So, Shem and Japheth took their father’s cloak and walked backwards with the cloak on their shoulders into the tent to cover up their naked father. Respectfully, they turned their faces away so as not to see their father lying there exposed. When Noah sobered up and realized what his youngest son had done to him