Monogamy, or restrictions by law to one wife, is no part of the economy of Heaven among men.
Such a system was commenced by the founders of the Roman empire.  That empire was founded on the banks of the Tiber by wandering brigands. 
When these robbers founded the city of Rome, it was evident to them that their success in attaining a balance of power with their neighbours, depended upon introducing females into their body politic, so they stole them from the Sabines, who were near neighbours.
The scarcity of women gave existence to laws restricting one wife to one man. 
Rome became the mistress of the world, and introduced this order of monogamy wherever her sway was acknowledged. 
Thus this monogamic order of marriage, so esteemed by modern Christians as a holy sacrament and divine institution, is nothing but a system established by a set of robbers.