John Chrysostom
Catena Aurea · Johannesevangelium 16
These things have I spoken unto you, that ye should not be offended. They shall put you out of the synagogues: yea, the time cometh, that whosoever killeth you will think that he doeth God service. And these things will they do unto you, because they have not known the Father, nor me. But these things have I told you, that when the time shall come, ye may remember that I told you of them. And these things I said not unto you at the beginning, because I was with you.
(Hom. lxxviii) And He predicted these trials for another reason, viz. that they might not say that He had not foreseen them; That ye may remember that I told you of them, or that He had only spoken to please them, and given false hopes. And the reason is added, why He did not reveal these things sooner: And these things I said not unto you at the beginning, because I was with you; because, that is, ye were in My keeping, and might ask when you pleased, and the whole battle rested upon Me. There was no need then to tell you these things at the first, though I myself knew them.