2 Corinthians 5:18-20

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. Therefore, we are ambassadors for Christ, as though God were entreating through us; we beg you on behalf of Christ, be reconciled to God.

Ephesians 6:15,20

And having shod your feet with the preparation of the gospel of peace; For which I am an ambassador in chains; that in proclaiming it I may speak boldly, as I ought to speak.