This ecumenical service on Reformation Day, October 31, 2016, kicking off the 500th anniversary year of the Reformation is a significant historical moment in the long journey toward Christian unity among Lutherans and Roman Catholics. I believe it is the first time ever that a Catholic pope attended a Reformation Day celebration in a Lutheran Cathedral. We have come a long way since the pre-Vatican II days, which celebrated the divisions rather than what unites us as Lutheran and Catholic Christians. With 50 years of Lutheran-Catholic dialogues behind us, the Holy Spirit seems to be hard at work among us. One of the questions facing us is: Where is the Spirit leading us from here, and are we willing to go there?