'Nakedness' in the Bible

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

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.

And Joseph remembered the dreams which he dreamed of them, and said unto them, Ye are spies; to see the nakedness of the land ye are come.

And he said unto them, Nay, but to see the nakedness of the land ye are come.