In a letter to Beatrice Frohlich, 17 December 1952 Einstein stated, "The idea of a personal God is quite alien to me and seems even naïve."

Calaprice, Alice (2000). The Expanded Quotable Einstein. Princeton: Princeton University Press, p. 217. Einstein Archives 59-797

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"The word God is for me nothing more than the expression and product of human weaknesses, the Bible a collection of honourable, but still primitive legends. No interpretation no matter how subtle can (for me) change this. These subtilised interpretations are highly manifold according to their nature and have almost nothing to do with the original text."

James Randerson (13 May 2008). "Childish superstition: Einstein's letter makes view of religion relatively clear". The Guardian.
"What he wrote". The Guardian. 13 May 2008.
"Einstein letter calls Bible ‘pretty childish’". NBCNews. Associated Press. 13 May 2008.
"Einstein Letter: Belief In God "Childish," Jews Not Chosen People". The Huffington Post. 21 May 2008.
Calaprice, Alice (2011). The Ultimate Quotable Einstein. Princeton, New Jersey: Princeton University Press, p. 342.