Christian men can marry more than one wife no bible verses is against polygamy
There's no mentioned in the bible that Christian can have more than one wife or it is promoting polygamy, rather it is teaching loyalty and honesty to his wife, I am not fond of reading the bible, but most of the Christians church or sects teaches loyalty to one wife only
but since some Christian countries already have divorced, they can marry more than once.
But it is in the ten commandments that men should not commit adultery, meaning men can only have one wife, having two is a mortal sin. Anyway, even in reality, wife won't allow that their husbands have two wives.
Here in our country, we don't allow divorce yet. It is not legal here unless there is a big problem between coupls that they should void their marriage.