"Nevertheless,I tell you the truth;it is expedient for you that I go away:for if I go not away,the Comforter will not come unto you;but if I depart,I will send him unto you.
And when he is come,he will reprove the world of sin,and of righteousness,and of judgment:
Of sin,because they believe not on me;
Of righteousness,because I go to my Father,and ye see me no more;
Of judgment,because the prince of this world is judged.
I have yet many things to say unto you,but ye cannot bear them now"
JOHN 16:7-12