I would just like to add to your great post, that the invitation to "...peacemaking, cooperation and seeking the common good..." is embedded in us as human, in our call towards civilization, to intelligent community - the "image and likeness of God" in us by creation, if you will. 
The Jesus factor invites us to more and greater and, more importantly, elevates it to communion, community with the Parent Creator . WE are responsible for our humanity as we are to our religious values. 
Jesus and reflected in Paul are in continuity with civil thought, e.g., Aristotle "Ethics", 500 yrs before.