2 Corinthians 5:18-21 (YLT)
18 And the all things are of God, who reconciled us to Himself through Jesus Christ, and did give to us the ministration of the reconciliation,
19 how that God was in Christ–a world reconciling to Himself, not reckoning to them their trespasses; and having put in us the word of the reconciliation,
20 in behalf of Christ, then, we are ambassadors, as if God were calling through us, we beseech, in behalf of Christ, `Be ye reconciled to God;’
21 for him who did not know sin, in our behalf He did make sin, that we may become the righteousness of God in him.

The ministry of reconciliation is the whole message of the gospel conveyed by preaching, teaching, and the example of Christians, assuring men of God’s love, and leading them to accept the will of God as revealed in Christ as their own.
Reconciliation is fixing a relationship that has been broken. The relationship between man and God that was broken because of sin comes under this because sin separates us from the Father, therefore, Christ had to die to reconcile man back to the Father.
We could not do anything to undo the effect of sin, which damaged our relationship with the Lord, but God in His grace reached out to us through the death of Jesus to wipe the record of sin, and because this has been extended to us, we too are to reconcile man back to God.
Therefore, being justified by faith says Romans 5:1 means apostle Paul takes it for granted that he has proved that justification is by faith and that everyone has an equal title with the Jews to salvation by faith.
Reconciliation begins with the recognition that without Jesus Christ we are lost and could be eternally separated from the Father.
So many nations of the world such as China and Germany had dividing walls and separation sections due to fraction and war, the same can be said about the spiritual walls that divide or separates us from the Lord.
Not only did Christ remove the walls that separate believers from God but He also shattered the walls that separate believers from each other because we are brought near and together to God through the sacrificial love of Christ. Even if these walls are academic, racial, political, or economic, every wall is breached by Christ according to Ephesians 2:11-21.
The ministry of reconciliation justifies us by the blood of the Lamb and freely by His grace, granting us peace with God the Father.
With man-to-man reconciliation, we remember that Paul in Philemon 1:10-12 reconciled a slave,
Onesimus, to his master as a Christian brother and fellow member of God’s family.
Reconciliation means that we re-establish a broken relationship, marriage, family, parental, business, and friendship. Wherever the barriers or walls between people are raised, it causes differences, social inequality, misunderstanding and breakdown but Christ can break down these walls and bring reconciliation.
As believers and members of the body of Christ, when we become reconciled and transformed, we must not allow strife, differences, arguments, and misunderstanding separates us from each other and from the Lord. Reconciliation always requires someone to take the first step.
We must avoid grudges because it is counterproductive to the ministry of reconciliation. Hebrews 12:14 commands us to pursue peace with everyone and Matthew 5:24 says our offering won’t be accepted until we have reconciled with our brother.
The essential content of the ministry of reconciliation is the forgiveness of sins because of Christ’s death.
Reconciliation begins by the will of God, who reconciled us to Himself through Christ.
Reconciliation is a divine provision by which God’s holy displeasure against man was appeased. The hostility was removed and the relationship restored. Reconciliation is the heart of the gospel. Everything we do is directed toward the faith of sinners who can be reconciled to God.
This is our calling, the ministry of reconciliation.
Shalom