John 14:28-31

28 ye heard that I said to you -- I go away, and I come unto you; if ye did love me, ye would have rejoiced that I said -- I go on to the Father, because my Father is greater than I.

29 `And now I have said [it] to you before it come to pass, that when it may come to pass, ye may believe;

30 I will no more talk much with you, for the ruler of this world doth come, and in me he hath nothing;

31 but that the world may know that I love the Father, and according as the Father gave me command so I do; arise, we may go hence.