“If I had not come and spoken to them, they would not have sin; but now they have no excuse for their sin.” (John 15:22) What strange words are these!  Especially the part where Jesus says, “If I had not come...” What would it be like, I wonder, if Christ had not come?  Would it really make that much difference?  Are we right in dating all human history from the birth of Christ, so that everything that has happened before He came is called “B.C.” (before Christ) and everything that has happened since then is called “A.D.” (Anno Domini - “the year of our Lord?”) Parenthetically, we might note the irony in the fact that even those who deny Christ must date their denials from His birth!  Is this all some sort of gigantic mistake, or does the birth of Christ in our world really make that much …