Leviticus 20:17-19

Modern English Version

¹⁷ If a man lies with his sister, whether the daughter of his father or mother, they have exposed each other’s nakedness; it is a wicked thing and they shall be cut off from the sight of their people. He has exposed his sister’s nakedness, and he shall bear his iniquity.

¹⁸ If a man lies with a woman during her menstrual period and exposes her nakedness, her fountain of blood is then exposed. Both of them shall be cut off from among their people.

¹⁹ You shall not have relations with your mother’s sister or your father’s sister, for this is to expose the nakedness of one’s relative. They shall bear their iniquity.