Book excerpt: In 1586, six years after the Book of Concord was published, Lutheran theologian Jakob Andreae and Calvinist French Reformed theologian Theodore Beza met to debate the differences between the two confessions. Their debate centered on the Lord's Supper, the person of Christ, Baptism, art and music in churches, and predestination. These are the classic issues between these two Protestant confessions, and this is the classic debate between two leading theologians of the second generation of the Reformation.