The year 2017 marks the 500th anniversary of the Reformation, a watershed event in the lives of Western Christians. For Lutherans, the anniversary evokes their determination to proclaim the gospel with purity and their efforts to live a reformed ecclesial life even if this eventually led to a break with the Roman Church of Luther's time. Viewed in this light, 2017 is a celebration of the gospel message of God's free gift of justification in Christ...