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.
Howbeit when he, the Spirit of truth, is come, he will guide you into all truth: for he shall not speak of himself; but whatsoever he shall hear, that shall he speak: and he will shew you things to come.
He shall glorify me: for he shall receive of mine, and shall shew it unto you.
The Gospel of St John (Chapter 16 Verse 7 to 14)