In 2 Corinthians we read:
...if anyone is in Christ, he is a new creation; the old has gone, the new has come! 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 men's sins against them. And he has committed to us the message of reconciliation. We are therefore Christ's ambassadors, as though God were making his appeal through us. We implore you on Christ's behalf: Be reconciled to God. God made him who had no sin to be sin for us, so that in him we might become the righteousness of God.
This passage is amazing. Kelly and I are "missionaries" in Africa so of course we have to remember each day that we are ambassadors for Christ. I am reading a book right now called Instruments in the Redeemers Hands and the author, Paul Tripp, expands on this passage and what it means to be an ambassador: it's a 24/7 calling. But what I love about this passage in 2 Corinthians is that St. Paul is not talking about the call of missionaries to be ambassadors, he is talking about the call for every believer. God is making his appeal to the world through each one of us: Be reconciled to God through Jesus Christ. I was challenged by this today and I hope you are too. Let us truly be ambassadors for Christ, faithfully proclaiming a message of reconciliation.