John 16:33

(Hom. lxxix. 2) These things have I said unto you, that ye might have peace: i. e. that ye may not reject Me from your minds. For not only when I am taken shall ye suffer tribulation, but so long as ye are in the world: In the world ye shall have tribulation. (Hom. lxxx) i. e. raise up your spirits again: when the Master is victorious, the disciples should not be dejected; I have overcome the world.

And then, in bringing to a close this weighty and protracted discourse, He said, "These things have I spoken unto you, that in me ye might have peace. In the world ye shall have tribulation; but be of good cheer, I have overcome the world." The beginning of such tribulation was to be found in that whereof, in order to show that they were infants, to whom, as still wanting in intelligence, and mistaking one thing for another, all the great and divine things He had said were little better than proverbs, He had previously said, "Do ye now believe? Behold, the hour cometh, yea, is now come, that ye shall be scattered, every man to his own." Such, I say, was the beginning of the tribulation, but not in the same measure of their perseverance. For in adding, "and ye shall leave me alone," He did not mean that they would be of such a character in the subsequent tribulation, which they should have to endure in the world after His ascension, as thus to desert Him; but that in Him they should have peace by still abiding in Him.

But in that tribulation, which they encountered after His glorification and they themselves had received the Holy Spirit, they did not leave Him: and though they fled from city to city, from Himself they did not flee; but in order that, while having tribulation in the world, they might have peace in Him, instead of being fugitives from Him, it was rather Himself that they made their refuge. For in receiving the Holy Spirit, there was wrought in them the very state described to them now in the words, "Be of good cheer, I have overcome the world." They were of good cheer, and they conquered. But in whom, save in Him? For He had not overcome the world, were it still to overcome His members. Hence said the apostle, "Thanks be unto God, who giveth us the victory;" and immediately added, "through our Lord Jesus Christ:" through Him who had said to His own, "Be of good cheer, I have overcome the world."

When the Holy Spirit was given them, they were of good cheer, and, in His strength, victorious. For He would not have overcome the world, had the world overcome His members. When He says, These things have I spoken to you, that in Me ye might have peace, He refers not only to what He has just said, but to what He had said all along, either from the time that He first had disciples, or since the supper, when He began this long and wonderful discourse. He declares this to be the object of His whole discourse, viz. that in Him they might have peace. And this peace shall have no end, but is itself the end of every pious action and intention.

(xxvi. Moral. c. xi.) As if He said, Have Me within you to comfort you, because you will have the world without you.