Dominica post Ascensionem: "He is with us alway even unto the end of the world"

John 15:26-27; 16:1-4
At that time, Jesus said unto His disciples: When the Comforter is come, Whom I will send unto you from the Father, even the Spirit of truth, Which proceedeth from the Father, He shall testify of Me. And so on.

Homily by St. Augustine, Bishop of Hippo.
Tract 92 John.
The Lord Jesus, in that discourse which He addressed to His disciples after the Last Supper, when He was on the very eve of the Passion, when He was, as it were, about to go away and leave them as touching His bodily Presence, albeit as touching His spiritual Presence, He is with us alway even unto the end of the world, Matth. xxviii. 20, in that discourse He exhorted them to bear patiently the persecution of wicked men, of whom He speaketh as "the world", out of which world, nevertheless, He saith that He hath chosen even His disciples themselves, xv. 19, that they might know that it was by the grace of God that they were what they were, 1 Cor. xv. 10, whereas it was by their own sins that they had been what they had been.