“That’s behind me. Same as with everything else in my life, though, I approached what I learned with eyes and ears half-closed. It’s only now I realise how dangerous and destructive Christian culture has become. If there was ever any love in it, it’s been bled out. Three major religions preach Holy War: Shintoism, Islam, and Christianity. Christianity is the only one hypocritical enough simultaneously to enjoin its followers to turn the other cheek and suffer fools gladly and the rest of it. Look at the record. Germany was a Christian country almost exactly one hundred times as long as it was Nazi. Did the Nazis undo in twelve years all the church had done in twelve centuries? No, they built on it. Hitler was a baptised Catholic and never excommunicated. When he was enlisting the support of the bishops in 1933 he promised to do nothing to the Jews that the church had not already, and kept his promise.”

quoted in Dhanajay Keer: 'Dr Ambedkar: Life and Mission', p.279).

In response to his professor stating that the Bible is not the only inspired Word of God, 1957.

BBC's Have Your Say (December 2007)

See the Positive Atheism http://www.positiveatheism.org/hist/quotes/jeffphony.htm site on the extreme unlikelihood of this quote being authentic. It actually contains some known phrases of Jefferson's, but they are compounded with almost certainly false statements into a highly misrepresentative whole. Jefferson's own opinions on Jesus, God, Christianity and general opinions about them were far more complex than is indicated in this statement.
Misattributed

Children of the Ghetto (1892), bk. 1, ch. 7.

Source: The Subversion of Christianity (1984), pp. 35-36

Exclusive Interview with Aron Ra – Public Speaker, Atheist Vlogger, and Activist https://conatusnews.com/interview-aron-ra-past-president-atheist-alliance-america/, Conatus News (May 17, 2017)

"Is Theology Poetry?" (1945)

The Scientist As Rebel (2006)