John Chrysostom
Catena Aurea · Johannesevangelium 14
Let not your heart be troubled, neither let it be afraid. Ye have heard how I said unto you, I go away, and come again unto you. If ye loved me, ye would rejoice, because I said, I go unto the Father: for my Father is greater than I. And now I have told you before it come to pass, that, when it is come to pass, ye might believe. Hereafter I will not talk much with you: for the prince of this world cometh, and hath nothing in me. But that the world may know that I love the Father: and as the Father gave me commandment, even so I do. Arise, let us go hence.
(Hom. lxxv. 4) Or thus: The Apostles did not yet know what the resurrection was of which He spoke when He said, I go, and come again to you; or what they ought to think of it. They only knew the great power of the Father. So He tells them: Though ye fear I shall not be able to save Myself, and do not trust to My appearing again after My crucifixion; yet when ye hear that I go to My Father, ye should rejoice, because I go to one greater, one able to dissolve and change all things. All this is said inaccommodation to their weakness: as we see from the next words; And now I have told you before it come to pass; that when it does come to pass, ye may believe.