Isaiah 1:18 used as the close of the argument about playing all the parts, and always in the first person. Neville does not use it to excuse anything: he says outright that he has done many things of which he is not proud. What the verse does is remove the possibility of a residue - in the very end all is forgiven, because in the end I am one with the being who begot me, and then he lifts me completely beyond this level into an entirely different world. It follows directly from God playing all the parts (M903): if there is no other being to play the horrible part, then the horrible part cannot be held against a self that was never separate from the player. The verse occurs in about seventeen lectures.