Leviticus 18:18-20

New Revised Standard Version Updated Edition

¹⁸ And you shall not take^[a] a woman as a rival to her sister, uncovering her nakedness while her sister is still alive.

¹⁹ “You shall not approach a woman to uncover her nakedness while she is in her menstrual uncleanness.^{(A) 20} You shall not have sexual relations with your neighbor’s wife and defile yourself with her.^(B)