Edited and translated by Daniel Carlos Beros, René Krüger

Philip Melanchthon's theology is oriented to the question of salvation, with a markedly anti-speculative approach. His teaching focused—like Luther's—on understanding the Word of God that justifies the sinner. His theological system finds its unity on the basis of a paradigmatic synthesis between humanism and reforming Christianity.

With the publication, concluded in 1521, of Loci communes, Melanchthon composed the first dogmatic of the reform movement, with which it was not only possible for him to summarize with acuity the new evangelical approach in a systematic exposition; With it he introduced at the same time a systematic way of doing theology specially adapted to Reformation theology. Melanchthon shows how the dialectic between the loci of sin, law, and grace, the three fundamental concepts that determine the true core of Pauline exposition, underlies the whole history of salvation.

Integrated into the Torre del Aire collection, which has been publishing the Collected Works of Martin Luther, these Fundamental Concepts of Systematic Theology are inscribed in the purpose of making known some fundamental texts of the Protestant Reformation.