Leviticus 18:9-11

Good News Translation

^9 (A)Do not have intercourse with your sister or your stepsister, whether or not she was brought up in the same house with you. ¹⁰ Do not have intercourse with your granddaughter; that would be a disgrace to you. ¹¹ Do not have intercourse with a half sister; she, too, is your sister.