Leviticus 18:7-9

New American Standard Bible

^7 (A)You shall not uncover the nakedness of your father, that is, the nakedness of your mother. She is your mother; you are not to uncover her nakedness. ^8 (B)You shall not uncover the nakedness of your father’s wife; it is your father’s nakedness. ⁹ As for ^(C)the nakedness of your sister, either your father’s daughter or your mother’s daughter, whether born in the household or born outside the household, you shall not uncover their nakedness.