The 500th anniversary of the Reformation in 2017 provides a rich opportunity for congregations to observe a pivotal event in Christian history. Not just for Lutherans, this sourcebook is a guide to a yearlong celebration that can include worship, service, study and ecumenical dialogue. Among its offerings are a Planning Checklist, a Lenten study series based on Luther’s Confessions and a comparative study on worship through the centuries, from Luther to Vatican II to ongoing ecumenical reforms. There are worship helps, liturgical pieces, reproducible bulletin inserts, a guide to a festival of art and song, and much more. The accompanying CD-ROM contains all content for ease in adaptation and reproduction. Worship planners, preachers, and educators, as well as teams charged with special planning, will benefit from this sourcebook.