3:86 How would God guide a people who go back to their old ways of disbelief after experiencing the blessings of Faith, and after witnessing that the Messenger is true, and after clear evidence of the Truth has come to them! For, God never intervenes to show the Lighted Road to those who displace reality with conjecture, and thus, hurt their own ‘selves’.
[Zaalimeen = Oppressors = Those who hurt themselves or others = Who displace something from its rightful place = Who relegate the Truth = Violators of human rights = Those who prefer to live in the darkness of ignorance = Commonly translated as wrongdoers]
3:87 Such are the people whose logical recompense is God's rejection, and that of the Universal Laws, and of humanity at large. [Rejecters of the Divine Laws trail behind in the community of nations]
3:88 They will abide in this state. Their torment will neither be diminished, nor will they be given further respite.
3:89 Except those who practically repent by ceasing their transgressions, start journeying in the right direction and, thus, take corrective action. For, behold, God is Absolver of faults, Nourisher of the Universe. (The terms Taubah, Ghafoor and Raheem have been translated according to the Quraish lexicon.)
3:90 Surely, as for those who reject belief after choosing to be graced with belief, and then, go on adding to their defiance of Faith, their repentance will not be accepted. For, it is they who have chosen the wrong direction. [4:18]
Correcting the wrong you have done is just as important as accepting the wrong in the first place. Whatever situation you are in, men and women must stop the wrong, undo the harm it caused and then continue in a Quranic way of living. If this means separating from a multiple haram marriage, so be it, but as stated, the man has to maintain the woman until she is able to stand on her own feet, or forever, whichever is necessary.