Ein feste Burg ist unser Gott
The other Reformation approach, the normative principle of worship, produced a burst of hymn writing and congregational singing. Martin Luther is notable not only as a reformer, but as the author of hymns including "Ein feste Burg ist unser Gott" ("A Mighty Fortress Is Our God"), "Gelobet seist du, Jesu Christ" ("Praise be to You, Jesus Christ"), and many others. Luther and his followers often used their hymns, or chorales, to teach tenets of the faith to worshipers. The first Protestant hymnal was published in Bohemia in 1532 by the Unitas Fratrum.