One of the tent poles of my new book about the influence of Moses in America is Lincoln’s speech about Gettysburg, in which he use the paradigm of the Exodus to talk about the birth, struggle, and rebirth of America, drawing the parallel with the birth (Creation), struggle (slavery), and rebirth (Exodus) of Israel. How thrilling, then, considering how much time I’ve spent with the story in recent months to see this new photo of Lincoln giving the Gettysburg address.