Zac Poonen emphasizes the dignity of being an ambassador for Christ, comparing it to the dignified conduct of ambassadors from powerful nations. He highlights that true ambassadors of Christ should not beg for money or dishonor His name, as God owns everything and provides for His servants. Poonen urges Christians to maintain their dignity and connection with their heavenly homeland, regardless of their material circumstances. He references Paul's example of enduring hardships while representing Christ with integrity and joy. The sermon calls for a transformation in how Christian workers present themselves, advocating for a dignified approach to ministry.