Peacemakers are simply agents of Grace, showing people the way to the Prince of Peace. Peacemakers are ambassadors sent to represent the King and His Kingdom.
What is the message? It is the message of reconciliation, the message that all is forgiven, the message of hope, and love, and grace, and a thousand other good things (see 2 Corinthians 5:17-21). It is the most awe-inspiring mission a human being could ever have: to represent Heaven in the midst of Hell; Light in the midst of Darkness; Liberty in the midst of Bondage; to proclaim the preeminence and Lordship of Jesus when we do not yet see all things submitted to Him (Hebrews 2:8). And to do all this in a way that does not drive people away or turn them off, but causes them to fall in love with Him and make their peace with Him – not through forced submission, manipulation, or fear – but willingly, gladly.