Full Idea
An important development in the formation of the modern worldview was the emergence of Protestantism, that reconfigured the self by privileging the inner states of the soul. Salvation concerns inner feelings, thoughts and desires, which can be genuine.
Gist of Idea
Protestantism brought the modern emphasis on inner states of the soul
Source
Kevin Aho (Existentialism: an introduction [2014], 1 'Emergence')
Book Reference
Aho,Kevin: 'Existentialism: an introduction' [Polity 2014], p.6
A Reaction
[bit compressed] He is preparing the historical background for the existentialist concept of authenticity. We can link this Protestant idea with Descartes's Cogito, which grounds knowledge in the inner self.