"I think it's very much in tune with the Gospel of Luke, where the church is called away. I think that he does see us moving through history as a people on pilgrimage, which is a theme of the Second Vatican Council and of Lumen Gentium."

God Bless Cardinal Blase Cupich for this beautiful description of the Catholic Church.  We too often forget that faith, like life, is a pilgrimage.  We start at one point and journey to another.  The description of God and the Church as "a Mighty Fortress" that never moves is a false one.  It is indeed ironic that those who consider themselves the most Catholic adopt this Lutheran metaphor.  God does indeed accompany us on our journey.