Christianity’s greatest missionary (Paul) used the term to define his ministry .
2 Corinthians 5:18-19, “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 people’s sins against them. And he has committed to us the message of reconciliation.“
Ephesians 2:14, “For he himself is our peace, who has made the two groups one and has destroyed the barrier, the dividing wall of hostility,”
Ephesians 3:26,28, “So in Christ Jesus you are all children of God through faith… There is neither Jew nor Gentile, neither slave nor free, nor is there male and female, for you are all one in Christ Jesus.”