Leviticus 18:9
You 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.

Leviticus 18:10
You must not have sexual relations with your son's daughter or your daughter's daughter, for that would shame your family.

Leviticus 18:12
You must not have sexual relations with your father's sister; she is your father's close relative.