Ministry begins with Christ, continues with us, that is a ministry of reconciliation (redemption, justification, sanctatification). This is carried out in day to day living in Christ Jesus and the forgiveness He gives. This letter was a response to the positive result of the previous letter. It was to build them up and point them to Christ. Our summary verse is from 2 Corinthians 5:19: “Namely, that God was in Christ reconciling the world to Himself, not counting their wrongdoings against them, and He has committed to us the word of reconciliation.” – (NASB)

source https://burdenblessing.podbean.com/e/46-2-corinthians-summary-verse/