Leviticus 18:8-10

Revised Standard Version Catholic Edition

⁸ You shall not uncover the nakedness of your father’s wife; it is your father’s nakedness. ⁹ You shall not uncover the nakedness of your sister, the daughter of your father or the daughter of your mother, whether born at home or born abroad. ¹⁰ You shall not uncover the nakedness of your son’s daughter or of your daughter’s daughter, for their nakedness is your own nakedness.