I think the main thing is, if there is any confusion or doubt as to what you should do, to err on the side of trusting that God can do the impossible….
God can do immeasurably more than you could ever ask or imagine. He can heal your heart, and he can resurrect your marriage, no matter what state it’s in.
As mere humans, we tend to limit God, especially in this extreme type of situation. But where there is room for repentance, there is also room for forgiveness and grace. If you can’t imagine such a miracle in your situation, choose to believe that God can and does. And in practicing that power you possess to believe God and take him at his word, you will find the strength to commit to acting on that belief. As we know from experience, reconciliation is a matter of trust, and it begins between you and God.
We didn’t have to remarry; biblically, the grounds for divorce were sound. But that doesn’t negate the truth that God created marriage to be the foundation of the family, and he created the family to be the foundation of society. The best thing we can do for ourselves, our children, and our society as a whole is to preserve marriages. If you choose to give up your right to your ego and your pain and walk the road of forgiveness and grace, you are glorifying God and living according to his purpose. You are giving an immense gift to yourself, your spouse, and your children. If you allow God to heal your heart and bolster you with his grace and love, choosing to walk the difficult path, you will never regret it.
— Cheryl & Jeff Scruggs, I Do Again, p. 174-176