Leviticus 20:18-20

Contemporary English Version

^18 (A) If you have sex with a woman during her monthly period, both you and the woman will be cut off from the people of Israel. ^19 (B) The sisters of your father and mother are your own relatives, and you will be punished for having sex with any of them. ²⁰ If you have sex with your uncle's wife, neither you nor she will ever have any children.