Full Idea
Protestantism is no longer concerned, as Catholicism is, about what God is in himself, but about what he is for man.
Gist of Idea
Catholicism concerns God in himself, Protestantism what God is for man
Source
Ludwig Feuerbach (Principles of Philosophy of the Future [1843], §02)
Book Reference
Feuerbach,Ludwig: 'Principles of the Philosophy of the Future', ed/tr. Vogel,M [Hackett 1986], p.5
A Reaction
It is certainly true that the major religions in their origins seem to be almost exclusively concerned with God alone, and have little interest in human life (or morality).