Old Testament polygamous marriages
God's design for marriage has always been between one man and one woman right from Genesis. When many of the Israelites started having polygamous marriages, why didn't God speak out against that sin, and lead them to repentance?
In the Bible God does not always explain his actions or his inaction. Nor does he have to. Job learned that lesson the hard way. When the Bible narrates events and people’s actions, it does not always do so with commentary on the morality or immorality of the people involved. Sometimes, the reader is left to evaluate the actions using other parts of Scripture.
When it comes to God’s design for marriage, it is clear that marriage is to be the lifelong union of one man and one woman (Genesis 2:24; Matthew 19:4-6; Romans 7:2-3; 1 Corinthians 7:2; 1 Timothy 3:2; and, Titus 1:6). While not necessarily providing commentary when individuals went beyond that design, the troubles and unhappy home life that resulted from polygamous marriages illustrate the truth: God’s ways are wise and God’s will is the route to happiness in our lives.