"Blessed are the peacemakers, for they will be called children of God" – Jesus Christ Who are the peacemakers? In short, peacemakers are those who have peace.
What do you mean by peace? My definition of peace is tranquility in state of mind and absence of enmity in relationships. Those who have peaceful hearts are content in all situations and it thus helps them to stay strong against troubling circumstances without grumbling, greed, and worries. Those who have no hostility towards anyone have no place for hatred, grudges, and animosity in their hearts. Where can peace be? It can exist in the hearts of anyone individually, between God and humans, and among humans.
Those who have no enmity with God are willing to share their peace by helping others who need to make peace with God and among themselves. How can the peacemakers have peace in them, with God, and others. They can have peace of mind because they first surrender all their weapons that can cause hostility towards God.