You must not take your wife's sister as a rival wife and have sexual relations with her while your wife is still alive.
Cross References
Leviticus 18:17You must not have sexual relations with both a woman and her daughter. You are not to marry her son's daughter or her daughter's daughter and have sexual relations with her. They are close relatives; it is depraved.
Leviticus 18:19You must not approach a woman to have sexual relations with her during her menstrual period.
Treasury of Scripture
Neither shall you take a wife to her sister, to vex her, to uncover her nakedness, beside the other in her life time.
wife.
Genesis 4:19
And Lamech took unto him two wives: the name of the one was Adah, and the name of the other Zillah.
Genesis 29:28
And Jacob did so, and fulfilled her week: and he gave him Rachel his daughter to wife also.
Exodus 26:3
The five curtains shall be coupled together one to another; and other five curtains shall be coupled one to another.
to vex her
Genesis 30:15
And she said unto her, Is it a small matter that thou hast taken my husband? and wouldest thou take away my son's mandrakes also? And Rachel said, Therefore he shall lie with thee to night for thy son's mandrakes.
1 Samuel 1:6-8
And her adversary also provoked her sore, for to make her fret, because the LORD had shut up her womb…
Malachi 2:15
And did not he make one? Yet had he the residue of the spirit. And wherefore one? That he might seek a godly seed. Therefore take heed to your spirit, and let none deal treacherously against the wife of his youth.
