Leviticus 18:18-20

New American Standard Bible

¹⁸ And you shall not ^[a]marry a woman in addition to her sister ^[b]as a second wife while she is alive, to uncover her nakedness.

¹⁹ ‘^(A)Also you shall not approach a woman to uncover her nakedness during her ^(B)menstrual impurity. ²⁰ And ^(C)you shall not have sexual intercourse with your neighbor’s wife, to be defiled with her.