The world advances free will, the rational and natural approach of good works, as the means of obtaining the forgiveness of sin.
 Martin Luther, Commentary on the Epistle to the Galatians (1535). copy citation

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Author Martin Luther
Source Commentary on the Epistle to the Galatians
Topic forgiveness sin
Date 1535
Language English
Reference
Note Translated by Theodore Graebner
Weblink http://www.gutenberg.org/files/1549/1549-h/1549-h.htm

Context

“In actual living, however, it is not so easy to persuade oneself that by grace alone, in opposition to every other means, we obtain the forgiveness of our sins and peace with God. The world brands this a pernicious doctrine. The world advances free will, the rational and natural approach of good works, as the means of obtaining the forgiveness of sin. But it is impossible to gain peace of conscience by the methods and means of the world. Experience proves this. Various holy orders have been launched for the purpose of securing peace of conscience through religious exercises, but they proved failures because such devices only increase doubt and despair.” source