8You must not have sexual relations with your father’s wife; it would dishonor your father.
9You must 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.
10You must not have sexual relations with your son’s daughter or your daughter’s daughter, for that would shame your family.
11You must not have sexual relations with the daughter of your father’s wife, born to your father; she is your sister.
12You must not have sexual relations with your father’s sister; she is your father’s close relative.
13You must not have sexual relations with your mother’s sister, for she is your mother’s close relative.
14You must not dishonor your father’s brother by approaching his wife to have sexual relations with her; she is your aunt.
15You must not have sexual relations with your daughter-in-law. She is your son’s wife; you are not to have sexual relations with her.
16You must not have sexual relations with your brother’s wife; that would shame your brother.
— Leviticus 18:8-16