Esau took his wives of the daughters of Canaan; Adah the daughter of Elon the Hittite, and Aholibamah the daughter of Anah the daughter of Zibeon the Hivite;
-- Gen. 36:2 (KJV)
In ancient times, polygamy was acceptable. Currently, polygamy is not acceptable because it is demeaning towards women. If any religion believes that polygamy is OK, then that religion is incorrect.
Numerical Analysis: The numerical pattern for this verse is 9,2,3,6. (9) To overturn evil, stay out of polygamy. (2) (Adah means pleasure; ornament.) To be delivered, find a spouse that is pleasing to you. (3) (Aholibamah means tent of the high place.) To stay in the Spirit, choose to live with high expectations for yourself. (6) To expose evil, choose to live with high expectations for yourself.