God's Divine plan for marriage is one man and one woman. The best thing you can say is that HE allows multiple wives. He does not require them, (Sorry Mormons and Muslims). He simply does not make an issue of it. But they are not His intention for us.
Matthew 19:8-9 8 (Jesus) said to them, “Moses, because of the hardness of your hearts, permitted you to divorce your wives, but from the beginning it was not so. 9 And I say to you, whoever divorces his wife, except for sexual immorality,[d] and marries another, commits adultery; and whoever marries her who is divorced commits adultery.”
Jesus seems to be saying that some things were permitted under Old Testament law, but they were not the Lord's plan for us. When he says that if you divorce your wife and marry another you commit adultery, I think that implies that you shouldn't have another wife.
Just because God didn't forcibly prevent a man from marrying more than one wife, did not mean he allowed it. The Bible contains a written history of what men did even when it was contradictory to God's plan.
The author seems to think that polygamy is “wrong” and should not be considered a marriage.
What a closed-minded bigot!
Anything short of polygamous, inter-species, intergenerational marriage is a violation of civil rights!