Leviticus 20:17–21

“If a man takes his sister, a daughter of his father or a daughter of his mother, and sees her nakedness, and she sees his nakedness, it is a disgrace, and they shall be cut off in the sight of the children of their people. He has uncovered his sister’s nakedness, and he shall bear his iniquity. If a man lies with a woman during her menstrual period and uncovers her nakedness, he has made naked her fountain, and she has uncovered the fountain of her blood. Both of them shall be cut off from among their people. You shall not uncover the nakedness of your mother’s sister or of your father’s sister, for that is to make naked one’s relative; they shall bear their iniquity. If a man lies with his uncle’s wife, he has uncovered his uncle’s nakedness; they shall bear their sin; they shall die childless. If a man takes his brother’s wife, it is impurity. He has uncovered his brother’s nakedness; they shall be childless.

“ ‘If a man marries his sister, the daughter of either his father or his mother, and they have sexual relations, it is a disgrace. They are to be publicly removed from their people. He has dishonored his sister and will be held responsible.

“ ‘If a man has sexual relations with a woman during her monthly period, he has exposed the source of her flow, and she has also uncovered it. Both of them are to be cut off from their people.

“ ‘Do not have sexual relations with the sister of either your mother or your father, for that would dishonor a close relative; both of you would be held responsible.

“ ‘If a man has sexual relations with his aunt, he has dishonored his uncle. They will be held responsible; they will die childless.

“ ‘If a man marries his brother’s wife, it is an act of impurity; he has dishonored his brother. They will be childless.

If a man marries his sister, whether his father’s daughter or his mother’s daughter, and they have sexual relations, it is a disgrace. They are to be cut off publicly from their people. He has had sexual intercourse with his sister; he will bear his iniquity. If a man sleeps with a menstruating woman and has sexual intercourse with her, he has exposed the source of her flow, and she has uncovered the source of her blood. Both of them are to be cut off from their people. You must not have sexual intercourse with your mother’s sister or your father’s sister, for it is exposing one’s own blood relative; both people will bear their iniquity. If a man sleeps with his aunt, he has violated the intimacy that belongs to his uncle; they will bear their guilt and die childless. If a man marries his brother’s wife, it is impurity. He has violated the intimacy that belongs to his brother; they will be childless.

“If a man marries his sister, the daughter of either his father or his mother, and they have sexual relations, it is a shameful disgrace. They must be publicly cut off from the community. Since the man has violated his sister, he will be punished for his sin.

“If a man has sexual relations with a woman during her menstrual period, both of them must be cut off from the community, for together they have exposed the source of her blood flow.

“Do not have sexual relations with your aunt, whether your mother’s sister or your father’s sister. This would dishonor a close relative. Both parties are guilty and will be punished for their sin.

“If a man has sex with his uncle’s wife, he has violated his uncle. Both the man and woman will be punished for their sin, and they will die childless.

“If a man marries his brother’s wife, it is an act of impurity. He has violated his brother, and the guilty couple will remain childless.

“ ‘As for a man who takes his sister, his father’s daughter or his mother’s daughter, and he sees her nakedness and she herself sees his nakedness, it is a disgrace, and they shall be cut off before the eyes of their people; he has exposed his sister’s nakedness—he must bear his guilt. As for a man who lies with a menstruating woman, he exposes her nakedness—her source he exposes and she herself reveals her blood’s source—both of them shall be cut off from the midst of their people. And you shall not expose the nakedness of your mother’s sister, and you shall not expose your father’s sister, because such a person has dishonored his close relative—they must bear their guilt. As for a man who lies with his aunt, he has exposed his uncle’s nakedness—they shall bear their sin; they shall die childless. As for a man who marries his brother’s wife, it is an abomination; he has exposed his brother’s nakedness—they shall be childless.

And if a man shall take his sister, his father’s daughter, or his mother’s daughter, and see her nakedness, and she see his nakedness; it is a wicked thing; and they shall be cut off in the sight of their people: he hath uncovered his sister’s nakedness; he shall bear his iniquity. And if a man shall lie with a woman having her sickness, and shall uncover her nakedness; he hath discovered her fountain, and she hath uncovered the fountain of her blood: and both of them shall be cut off from among their people. And thou shalt not uncover the nakedness of thy mother’s sister, nor of thy father’s sister: for he uncovereth his near kin: they shall bear their iniquity. And if a man shall lie with his uncle’s wife, he hath uncovered his uncle’s nakedness: they shall bear their sin; they shall die childless. And if a man shall take his brother’s wife, it is an unclean thing: he hath uncovered his brother’s nakedness; they shall be childless.