A year from this October 31, the world will observe the 500th anniversary of Luther's famous nailing of the 95 Theses to the door of the Wittenberg Cathedral, thereby launching the Protestant Reformation. It also launched centuries of conflict, sometimes violent, between Protestant and Catholic partisans. In recent years there has been rapprochement as conflict was replaced with conversation. It's not that all of our differences have been ironed out, but then we Protestants have our share of differences inside the "family," but there has been great movement towards one another. Standing at the heart of our differences is the question of justification and communion. Recently steps were taken by Lutherans and Catholics to bridge that divide. Martin Marty, a Lutheran, offers his take on that movement in this essay. Won't you take a read?