Verses 4 to 7 of John 16.

Yes, I’m telling you these things now, so that when they happen, you will remember my warning. I didn’t tell you earlier because I was going to be with you for a while longer. “But now I am going away to the one who sent me, and not one of you is asking where I am going. Instead, you grieve because of what I’ve told you. But in fact, it is best for you that I go away, because if I don’t, the Advocate won’t come. If I do go away, then I will send him to you.