Leviticus 20:18-20

New Catholic Bible

¹⁸ “ ‘If a man has sex with a woman during her menstrual time, they shall have uncovered her flow of blood, and they shall both be cut off from among their people. ¹⁹ You shall not uncover the nakedness of your mother’s sister or your father’s sister, for someone who uncovers a close relation shall bear his guilt. ²⁰ A man shall not have sex with his uncle’s wife, for he shall have laid bare his uncle’s nakedness. They shall bear their guilt and die childless.