Leviticus 18:17-19

Modern English Version

¹⁷ You shall not have relations with a woman and her daughter, nor shall you have her son’s daughter or her daughter’s daughter, for this exposes the woman’s nakedness. They are all near relatives. It is depravity.

¹⁸ And you shall not have a woman as a rival wife, who is the sister of your other wife, for this is to expose her nakedness while her sister, your other wife, is still alive.

¹⁹ Also you shall not approach a woman to have relations as long as she is in her menstrual uncleanness.