“A text structured by the scapegoat effect cannot make a theme of this; [and in turn] a text that makes a theme of the scapegoat cannot be structured by this effect. In the gospels, Christ is so obviously the scapegoat of everyone [in the text] that he can no longer be the scapegoat of the text, just as the sixteenth-century witch isn’t the scapegoat of the twentieth-century historian.”