The natural man receiveth not the things of the Spirit of God.
 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 God
Date 1535
Language English
Reference
Note Translated by Theodore Graebner
Weblink http://www.gutenberg.org/files/1549/1549-h/1549-h.htm

Context

“For is He not a merciful and generous Father who gives good things even to the unworthy and ungrateful? How much more will He grant unto me everlasting life as a due payment in return for my many good deeds and merits." This is the religion of reason. This is the natural religion of the world. "The natural man receiveth not the things of the Spirit of God." (I Cor. 2:14.) "There is none that understandeth, there is none that seeketh after God." (Romans 3:11.) Hence, there is really no difference between a Jew, a Mohammedan, and any other old or new heretic.” source