Leviticus 18:9-11

EasyEnglish Bible

⁹ Do not have sex with your sister. Do not have sex with a sister who is your mother's daughter or your father's daughter. It does not matter if she was born in your house or in another house. Do not have sex with any sister.

¹⁰ Do not have sex with any granddaughter. That would make you ashamed.

¹¹ Do not have sex with the daughter of your father and his wife. She is your sister.