As believers in Jesus, we are ambassadors of heaven's kingdom.
We are situated on the foreign soil of a fallen earth, but this compromised version of it is not our home. We are in the world, but we are not "of the world" John 17:14, 16). Instead of mixing in seamlessly with it, we must remain constantly aware that we are on assignment to represent the interests and ideals of the kingdom from which we've been sent. This means everywhere we go and in everything we do, we are ambassadors for Him. The assignment doesn't change depending on whatever else we are doing each day. We are always on mission. Everyone we meet, when they're around us for any length of time, should be able to tell who we are and what our assignment is, not because we're announcing it but because of the way we live out the ideals of our King and His kingdom. This is what ambassadors do.