
The Book of Concord (1580) or Concordia is the historic doctrinal standard of the Lutheran Church, consisting of ten credal documents recognized as authoritative in Lutheranism since the 16th century. They are also known as the symbolical books of the Evangelical Lutheran Church.

The Apology of the Augsburg Confession was written by Philipp Melanchthon during and after the 1530 Diet of Augsburg as a response to the Pontifical Confutation of the Augsburg Confession, Charles V's commissioned official Roman Catholic response to the Lutheran Augsburg Confession of June 25, 1530. It was intended to be a defense of the Augsburg Confession and a refutation of the Confutation. It was signed as a confession of faith by leading Lutheran magnates and clergy at the meeting of the Smalcald League in February, 1537, and subsequently included in the German [1580] and Latin [1584] Book of Concord. As the longest document in the Book of Concord it offers the most detailed Lutheran response to the Roman Catholicism of that day as well as an extensive Lutheran exposition of the doctrine of Justification.

The Athanasian Creed, also called the Pseudo-Athanasian Creed and sometimes known as Quicunque Vult which is both its Latin name and opening words meaning "Whosoever wishes", is a Christian statement of belief focused on Trinitarian doctrine and Christology. The creed has been used by Christian churches since the sixth century. It is the first creed in which the equality of the three persons of the Trinity is explicitly stated. It differs from the Nicene-Constantinopolitan and Apostles' Creeds in the inclusion of anathemas, or condemnations of those who disagree with the creed.

The Augsburg Confession, also known as the Augustan Confession or the Augustana from its Latin name, Confessio Augustana, is the primary confession of faith of the Lutheran Church and one of the most important documents of the Protestant Reformation. The Augsburg Confession was written in both German and Latin and was presented by a number of German rulers and free-cities at the Diet of Augsburg on 25 June 1530.

Body of Doctrine in Protestant theology of the 16th and 17th centuries is the anthology of the confessional or credal writings of a group of Christians with a common confession of faith.

Formula of Concord (1577) is an authoritative Lutheran statement of faith that, in its two parts, makes up the final section of the Lutheran Corpus Doctrinae or Body of Doctrine, known as the Book of Concord.

Luther's Large Catechism is a catechism by Martin Luther. It consists of works written by Luther and compiled Christian canonical texts, published in April 1529. This book was addressed particularly to clergymen to aid them in teaching their congregations. Luther's Large Catechism is divided into five parts: The Ten Commandments, The Apostles' Creed, The Lord's Prayer, Holy Baptism, and The Sacrament of the Eucharist. The Catechism, along with related documents, was published in the Book of Concord in 1580.

Luther's Small Catechism is a catechism written by Martin Luther and published in 1529 for the training of children. Luther's Small Catechism reviews the Ten Commandments, the Apostles' Creed, the Lord's Prayer, the Sacrament of Holy Baptism, the Office of the Keys and Confession and the Sacrament of the Eucharist. It is included in the Book of Concord as an authoritative statement of what Lutherans believe.

The Nicene Creed is a statement of belief widely used in Christian liturgy. It is called Nicene because it was originally adopted in the city of Nicaea by the First Council of Nicaea in 325. In 381, it was amended at the First Council of Constantinople, and the amended form is referred to as the Nicene or the Niceno-Constantinopolitan Creed. It defines Nicene Christianity.

The Smalcald Articles or Schmalkald Articles are a summary of Lutheran doctrine, written by Martin Luther in 1537 for a meeting of the Schmalkaldic League in preparation for an intended ecumenical Council of the Church.

The Treatise on the Power and Primacy of the Pope (1537), The Tractate for short, is the seventh Lutheran credal document of the Book of Concord. Philip Melanchthon, its author, completed it on February 17, 1537 during the assembly of princes and theologians in Smalcald.