In this text, we hear a declaration and a command.   Jesus prophesies the arrival of a new age, the kingdom of God, embodied in Jesus himself.  He proclaims this gospel to all who will embrace the truth of it and look to Him as their king for their salvation as they live a life of repentance.  Even though this kingdom is already in place because Jesus the king has breathed it into existence by His announcement, it will not yet be eternally consummated until the day of His return.  In the meantime, His kingdom will advance when this gospel message is preached faithfully, though many believers will suffer or die so that this good news can be made known to their dying neighbors.