Mission

Now all these things are from God, who reconciled us to Himself through Christ and gave us the ministry of reconciliation, namely, that God was in Christ reconciling the world to Himself, not counting their trespasses against them, and He has committed to us the word of reconciliation. (2 Corinthians 5:18-19 NASB)

Wedged between the ever popular verses about being a "new creature" and being "ambassadors of Christ," these verses clarify with these two questions:
Why have we been "made new"?  – to be reconciled with Him through Christ!
What is our mission as His "ambassadors" – the ministry of reconciliation

Reconciliation is about restoring relationships and is epitomized by Christ. He has made the way for my sinful soul to relate with holy God by paying the penalty for my sin so that it would not be held against my account. Now in my new life, I now have one job as His ambassador: to spread the word of reconciliation that I have experienced that others can be restored in relationship with Him also.