The first thought that word conjures up for many is the cessation of violence, war, and bloodshed.
Christians do pray for peace on earth.
But they understand the angels' proclamation of peace to be something far greater. In Christ we have peace, even if the whole world is crumbling around us. God abundantly provides His peace which sets our hearts at rest. Again and again His holy Word proclaims that peace. In the word of forgiveness spoken in the Absolution, we are assured that we are at peace with God.