REFORMATION SERVICES Historic Trinity Lutheran Church as the "Mother Church of Detroit Lutherans" hosts the Reformation Day Worship Service on Wednesday, October 31, 2007, at 12:00 noon. Rev. Dr. John L. Heins, President Emeritus of the Michigan District - LCMS and an Assisting Pastor at Historic Trinity will deliver the Reformation Sermon. He will be assisted by the Historic Trinity Cathedral Pastors.