Acts 1:3

"To whom also He shewed Himself alive." Having first spoken of the Ascension, he adverts to the Resurrection; for since thou hast been told that "He was taken up," therefore, lest thou shouldest suppose Him to have been taken up by others, he adds, "To whom He shewed Himself alive." For if He shewed Himself in the greater, surely He did in the minor circumstance. Seest thou, how casually and unperceived he drops by the way the seeds of these great doctrines? "Being seen of them during forty days." He was not always with them now, as He was before the Resurrection. For the writer does not say "forty days," but, "during forty days." He came, and again disappeared; by this leading them on to higher conceptions, and no longer permitting them to stand affected towards Him in the same way as before, but taking effectual measures to secure both these objects, that the fact of His Resurrection should be believed, and that He Himself should be ever after apprehended to be greater than man. At the same time, these were two opposite things; for in order to the belief in His Resurrection, much was to be done of a human character, and for the other object, just the reverse. Nevertheless, both results have been effected, each when the fitting time arrived. But why did He appear not to all, but to the Apostles only? Because to the many it would have seemed a mere apparition, inasmuch as they understood not the secret of the mystery. For if the disciples themselves were at first incredulous and were troubled, and needed the evidence of actual touch with the hand, and of His eating with them, how would it have fared in all likelihood with the multitude? For this reason therefore by the miracles wrought by the Apostles He renders the evidence of His Resurrection unequivocal, so that not only the men of those times - this is what would come of the ocular proof - but also all men thereafter, should be certain of the fact, that He was risen.

For this He then remained forty days on earth, furnishing in this length of time the sure evidence of their seeing Him in His own proper Person, that they might not suppose that what they saw was a phantom. And not content with this, He added also the evidence of eating with them at their board: as to signify this, the writer adds, "And being at table with them, He commanded." And this circumstance the Apostles themselves always put forth as an infallible token of the Resurrection; as where they say, "Who did eat and drink with Him." And what did He, when appearing unto them those forty days? Why, He conversed with them, says the writer, "concerning the kingdom of God." For, since the disciples both had been distressed and troubled at the things which already had taken place, and were about to go forth to encounter great difficulties, He recovered them by His discourses concerning the future.