Reconciliation can transform hopeless relationships. It's in the Bible, Philemon 1:15-16, TLB. "Perhaps you could think of it this way: that he ran away from you for a little while so that now he can be yours forever, no longer only a slave, but something much better—a beloved brother, especially to me. Now he will mean much more to you too, because he is not only a servant but also your brother in Christ."
Reconciliation is the central message of the gospel. It's in the Bible, II Corinthians 5:18-19, NIV. "All this is from God, who reconciled us to Himself through Christ and gave us the ministry of reconciliation; that God was reconciling the world to Himself in Christ, not counting men's sins against them. And He has committed to us the message of reconciliation."
Reconciliation heals broken relationships. It's in the Bible, Matthew 18:15, NIV. "If your brother sins against you, go and show him his fault, just between the two of you. If he listens to you, you have won your brother over."