I cannot believe that after all these years I have missed this objection! It absolutely disproves everything! I am dismayed! You can read this astounding piece of logic here. I will give a response a little later. I should quickly note that most Christians consider this passage to be a later addition to the NT canon. Of course we do not expect critics of the Christian faith to understand Textual Criticism. That would be to much work.
Mortal Questions 