The Promise of Forgiveness – If you have been caught in the tragedy of Divorce, remember that Jesus didn’t condemn the Woman at the Well who had been married Five Times and was then living with a man who wasn’t her husband, but rather he offered her “living water”, John 4:7ff. He didn’t excuse her behavior, but he accepted her and she became a new person having met Jesus.
Likewise, Jesus offered forgiveness to the Woman caught in Adultery, and she went away cleansed of her sin, John 8:3ff.
No, there is no “unforgivable sin” that he didn’t die for short of rejection of the Holy Spirit’s call to you to become a Christian. Divorce isn’t unforgivable, and He offers His Grace to everyone.
Jesus offers forgiveness to each of us, and not condemnation.