"The ancient Fathers had several wives, but they were driven to this by necessity. And accordingly kings received as by inheritance the wives of their friends according to the law of Moses. But it is not sufficient for a Christian to be satisfied with the work of the Fathers (Patriarchs). He must have a divine word for himself, that makes it certain for him, just as they had. For where there was no necessity or cause, the ancient Fathers did not have more than one wife, as Isaac, Joseph, Moses, and many others. Therefore I cannot advise it (taking more than one wife), but strongly advise against it, especially to Christians, UNLESS it might be a case of high necessity, such as that the wife was leprous or similarly afflicted. Other cases however I know not how to defend"
Luther's answer to Philip of Hesse who wanted a second wife (and he will marry her, publicly, at the presence of Melanchthon)
so remember, in case of "high necessity", you may have a second wife,..or if you are really unlucky a third one eheheh
>https://en.wikipedia.org/wiki/Philip_I,_Landgrave_of_Hesse#Bigamous_marriage