I have been pondering unilateral forgiveness for some time now and I do not think the use of this principle is for all occasions. Also, I cannot find any scripture commanding it. Maybe it was born out of the example of Christ on the cross asking God to forgive those who were executing Him, so naturally we conclude that to be Christ-like, we must forgive unilaterally.
With this in mind, in the gospels of Mathew and Luke, Jesus gave to his disciples directives regarding forgiveness before his death (do the words on the cross supersede the teachings?). When Peter asked Jesus how many times he must forgive, Jesus said, “If your brother sins, rebuke him; and If he repents, forgive him. If he sins against you seven times a day and returns to you seven times, saying I repent, forgive him.” Forgiveness becomes an obligation when our brothers/sisters repent. Repentance brings the acknowledgement we need to forgive. If we refuse to forgive when they have repented we become as the undeserving servant in Matthew 18: 34-35.
Christ also in this discourse added, "If thy brother shall sin against you, go and tell him his fault alone: if he listens, you have gained your brother. But if he will not hear you, then take with you one or two more, that in the mouth of two or three witnesses every word may be established. And if he shall neglect to hear them, tell it unto the church: but if he neglect to hear the church, let him be unto you as an heathen and a publican."
After reading Mathew and Luke, we can conclude that Christians have the right to rebuke those who commit wrong doing. If we command others to give unilateral forgiveness to all, then church discipline that redress wrongs, is unfounded, void. Maybe this is one of the reasons we are lacking spiritual discernments today. We not only do not lovingly chastise the wrongdoer, but bypass church discipline as well. By bypassing this structure, we are allowing sins to fester, seared consciences to grow more dark because of a lack of repentance.
As humans we focus on the periphery. Isn't it more important to bruise an ego and save our brothers and sisters from wrath. We are deeply concerned about showing mercy, but we have to admit that sometimes our mercies are misplaced. The use of unilateral forgiveness is sometimes distorted to deter others from confronting evil.
Paul commanded that a fornicator be removed from the membership in Corinth. He also turned Hymenaeus and Alexander over to Satan "so they might learn not to blaspheme God." Yet we differ in biblical responses with people who are not willing to seek reconciliation.
I realize that there are grey areas that cannot be solved without insight from God, however, failure to acquaint ourselves with His commandments will gradually weaken our defenses, and over a period of time, blind us to erosions that are occurring . Those whose hearts that have been transformed by the Lord knows that when we sin, we have an advocate with the Father who makes intercessions on our behalf. So why are we covering sin when we are told, "He who covers his sin will not prosper. But whoever confesses and forsake them will have mercy."
God demands that we repent always. What Say You?