Thou shalt not take a wife to her sister — Perhaps this text doth not simply forbid the taking one wife to another, but the doing it in such a manner or for such an end, that he may vex or punish, or revenge himself of the former; which probably was a common motive amongst that hardhearted people to do so.
Related Commentaries of Leviticus 18:18
Leviticus 18:18
18 Neither shalt thou take a wifeb to her sister, to vex her, to uncover her nakedness, beside the other in her life time.