Leviticus 18:9–11

You shall not uncover the nakedness of your sister, your father’s daughter or your mother’s daughter, whether brought up in the family or in another home. You shall not uncover the nakedness of your son’s daughter or of your daughter’s daughter, for their nakedness is your own nakedness. You shall not uncover the nakedness of your father’s wife’s daughter, brought up in your father’s family, since she is your sister.

“ ‘Do not have sexual relations with your sister, either your father’s daughter or your mother’s daughter, whether she was born in the same home or elsewhere.

“ ‘Do not have sexual relations with your son’s daughter or your daughter’s daughter; that would dishonor you.

“ ‘Do not have sexual relations with the daughter of your father’s wife, born to your father; she is your sister.

You are not to have sexual intercourse with your sister, either your father’s daughter or your mother’s, whether born at home or born elsewhere. You are not to have sex with her. You are not to have sexual intercourse with your son’s daughter or your daughter’s daughter, for they are your family. You are not to have sexual intercourse with your father’s wife’s daughter, who is adopted by your father; she is your sister.

“Do not have sexual relations with your sister or half sister, whether she is your father’s daughter or your mother’s daughter, whether she was born into your household or someone else’s.

“Do not have sexual relations with your granddaughter, whether she is your son’s daughter or your daughter’s daughter, for this would violate yourself.

“Do not have sexual relations with your stepsister, the daughter of any of your father’s wives, for she is your sister.

As for your sister’s nakedness, whether your father’s daughter or your mother’s daughter, whether born at home or born abroad, you must not expose their nakedness. As for the nakedness of your son’s daughter or your daughter’s daughter, you must not expose their nakedness, because they are your nakedness. As for the nakedness of the daughter of your father’s wife, she is your sister, a relative of your father; you must not expose her nakedness.

The nakedness of thy sister, the daughter of thy father, or daughter of thy mother, whether she be born at home, or born abroad, even their nakedness thou shalt not uncover. The nakedness of thy son’s daughter, or of thy daughter’s daughter, even their nakedness thou shalt not uncover: for theirs is thine own nakedness. The nakedness of thy father’s wife’s daughter, begotten of thy father, she is thy sister, thou shalt not uncover her nakedness.