As a Christian who accepts the Bible as the inspired word of God, I believe that divorce is sin. I believe that God intended for marriage partners to be faithful to each other until “death do us part,” and divorce often makes Him angry with us:
the Lord is the witness between you and the wife of your youth. You have been unfaithful to her, though she is your partner, the wife of your marriage covenant.
15 Has not the one God made you? You belong to him in body and spirit. And what does the one God seek? Godly offspring.[d] So be on your guard, and do not be unfaithful to the wife of your youth.
16 “The man who hates and divorces his wife,” says the Lord, the God of Israel, “does violence to the one he should protect,”[e] says the Lord Almighty.
So be on your guard, and do not be unfaithful. (Habbakuk 3:14-16 NIV)
Nevertheless, despite the fact that God hates divorce, it is sometimes OK for Christians to get one. This might sound like a contradiction, but it is not. A Christian should never want a divorce (they should prefer reconcilation accompanied by genuine repentance), but in some cases, through no fault of there own, reconciliation might be impossible. Sadly, it only takes the actions of one partner to ruin a marriage. Therefore, the Bible tells us that if an unbelieving man wants to divorce his Christian spouse, she should let him do it:
Christians are called to peace. There is nothing peaceful about trying to concoct a host of legal challenges to resist a divorce when the other person has made up their mind to get one. Sadly, you cannot force your non-Christian marriage partner to love you, no matter how loving you are to them. So in such cases where the divorce is forced upon you by your unbelieving partner’s sin, you can sign the divorce documents without having any guilt before God. Yes, divorce is always the result of sin, but both partners do not necessarily share equally in the guilt. You can be blameless before God even while going through a divorce.
I pray for everyone and anyone who has ever experienced the trial of divorce.
God bless you, and may you remain committed to the Biblical principles of repentance, forgiveness, and love.