John 16: 5 - 11
5 But now I am going to him who sent me; yet none of you asks me, `Where are you going?'
6 But because I have said these things to you, sorrow has filled your hearts.
7 Nevertheless I tell you the truth: it is to your advantage that I go away, for if I do not go away, the Counselor will not come to you; but if I go, I will send him to you.
8 And when he comes, he will convince the world concerning sin and righteousness and judgment:
9 concerning sin, because they do not believe in me;
10 concerning righteousness, because I go to the Father, and you will see me no more;
11 concerning judgment, because the ruler of this world is judged.

EWTN