Maybe there is stuff about the benefits of polygamy in Mormon scripture, but the Bible as far as I know never expressly condemns or promotes it. Solomon did it and it tore him seven (hundred) ways from Sunday, and in Romans (I think, but don't quote me on that), Paul says that pastors should be 'husbands of one wife'... implying that polygamy is an inconvenience at best.
Maybe there is stuff about the benefits of polygamy in Mormon scripture, but the Bible as far as I know never expressly condemns or promotes it. Solomon did it and it tore him seven (hundred) ways from Sunday, and in Romans (I think, but don't quote me on that), Paul says that pastors should be 'husbands of one wife'... implying that polygamy is an inconvenience at best.