Emphasis Preaching Journal

In Washington, D.C., as in every capital city in the world, there are embassies representative of the respective nations. On Massachusetts Avenue stands the British embassy. The building may stand upon American soil but that embassy building is a little fragment of the United Kingdom. Indeed it claims its own territorial rights as being British. The ambassador, when he visits the president, comes out merely as a Briton but as the nation's representative for whom he has the authority to speak, granted him by the queen and Parliament.

This is what Paul has in mind when he used that significant metaphor. We are embassadors of Christ. He represents to the world the Christ. He speaks to the world with the authority of the Christ. He may dwell in this world but his true home is in Christ.
-- Docherty