These solemn promises indicate to us just how important the Lutheran Confessions are for our church. Let’s take a look at the various items contained in the Book of Concord and then we will talk about why the Lutheran Confessions are so important for being a Lutheran. What are the Ecumenical Creeds? The three ecumenical creeds in the Book of Concord are the Apostles’ Creed, the Nicene Creed and the Athanasian Creed. They are described as “ecumenical” [universal] because they are accepted by Christians worldwide as correct expressions of what God’s Word teaches. What is the Augsburg Confession and Apology of the Augsburg Confession? In the year 1530, the Lutherans were required to present their confession of faith before the emperor in Augsburg, Germany. Philip Melanchthon wrote the Augsburg Confession and it was read before the imperial court on June 30, 1530. One year later, the Lutherans presented their defense of the Augsburg Confession, which is what “apology” here means. It too was written by Philip Melanchthon. The largest document in the Book of Concord, its longest chapter, is devoted to the most important truth of the Christian faith: the doctrine of justification by grace alone, through faith alone, in Christ alone.