Leviticus 20:14

And if a man take a wife and her mother, in revolting incest, it is wickedness, a most horrible act, an unheard-of deed of shame; they shall be burned with fire, both he and they, after they have been stoned, for thus the abnormality of their crime was emphasized; that there be no wickedness among you. In all these cases, both persons are alike guilty, because even the passive part consented to the act, permitted the seduction to take place. In the case of rape the Lord's judgment is different. Deuteronomy 22:26.