Polyandry (multiple husbands) is the physical and moral opposite of polygyny, and is worthy of death according to God.
"If a man be found lying with a woman married to an husband, then they shall both of them die, both the man that lay with the woman, and the woman" - Deu. 22

Something to think about: people who are against polygyny frame it as allowing men what it does not allow women. However, it is a marriage, which by definition involves both men and women. Polygyny allows a woman to marry a man who is already married, while a man is not allowed to marry a woman who is already married: he would be worthy of death.

Numerically speaking, those who condemn polygyny are condemning more women than men. Women are automatically the majority of people practising polygyny. ?