
639 In this material world there are two principal causes of division between man and wife, money and "the other woman" or "the other man". Money was dealt with in the last verse. Here is the case of "the other woman". Legally more than one wife (up to four) are permissible on the condition that the man can be perfectly fair and just to all. But this is a condition almost impossible to fulfil. If, in the hope that he might be able to fulfil it, a man puts himself in that impossible position, it is only right to insist that he should not discard one but at least fulfil all the outward duties that are incumbent on him in respect of her.

39 Do not leave one hanging—not fully enjoying the rights of a married woman and not fully divorced.