Age of Reason, Part II, Section 2
Having premised these things, I proceed to examine the authenticity of the Bible, and I begin with what are called the five books of Moses, Genesis, Exodus, Leviticus, Numbers, and Deuteronomy. My intention is to show that those books are spurious, and that Moses is not the author of them; and still further, that they were not written in the time of Moses, nor till several hundred years afterward; that they are no other than an attempted history of the life of Moses, and of the times in which he is said to have lived, and also of the times prior thereto, written by some very ignorant and stupid pretenders to authorship, several hundred years after the death of Moses, as men now write histories of things that happened, or are supposed to have happened, several hundred or several thousand years ago.