Formula of Concord (1577) is an authoritative Lutheran statement of faith (called a confession, creed, or "symbol") that, in its two parts (Epitome and Solid Declaration), makes up the final section of the Lutheran Corpus Doctrinae or Body of Doctrine, known as the Book of Concord. The Epitome is a brief and concise presentation of the Formula's twelve articles.

This appendix to the 1580 edition of the Book of Concord is a compilation of Scripture passages together with citations from the fathers of the ancient Christian Church. They are intended to show that the Christology of the Formula of Concord differs neither in substance nor in terminology from Christian Orthodoxy. (Introduction by Jonathan Lange)