John 21:14

For here He no more looketh to heaven, nor performeth those human acts, showing that those also which He did were done by way of condescension. And to show that He remained not with them continually, nor in like manner as before, It saith that, "This was the third time that Jesus appeared to them, after that He arose from the dead." And He biddeth them "to bring of the fish," to show that what they saw was no appearance. But here indeed it saith not that He ate with them, but Luke, in another place, saith that He did; for "He was eating together with them." But the, "how," it is not ours to say; for these things came to pass in too strange a manner, not as though His nature now needed food, but from an act of condescension, in proof of the Resurrection.

(Tract. cxxiii. 3) Which has reference not to manifestations, but to days; i. e. the first day after He had risen, eight days after that, when Thomas saw and believed, and this day at the draught of fishes; and thenceforward as often as He saw them, up to the time of His ascension. (de Con. Evang. iii. 25.) We find in the four Evangelists ten occasions mentioned, on which our Lord was seen after His resurrection: one at the sepulchre by the women; a second by the women returning from the sepulchre; a third by Peter; a fourth by the two going to Emmaus; a fifth in Jerusalem, when Thomas was not present; a sixth when Thomas saw Him; a seventh at the sea of Tiberias; an eighth by all the eleven on a mountain of Galilee, mentioned by Matthew; a ninth when for the last time He sat at meat with the disciples; a tenth when He was seen no longer upon earth, but high up on a cloud.

"This was now," he says, "the third time that Jesus showed Himself to His disciples after that He was risen from the dead." And this we are to refer not to the manifestations themselves, but to the days; that is to say, taking the first day when He rose again, and the [second] eight days after, when the disciple Thomas saw and believed, and [the third] on this day when He so acted in connection with the fishes, although how many days afterwards it was that He did so we are not told; for on that first day He was seen more than once, as is shown by the collated testimonies of all the evangelists: but, as we have said, it is in accordance with the days that His manifestations are to be calculated, making this the third; for that [manifestation] is to be reckoned the first, and all one and the same, as included in one day, however often and to however many He showed Himself on the day of His resurrection; the second eight days afterwards, and this the third, and thereafter as often as He pleased on to the fortieth day, when He ascended into heaven, although all of them have not been recorded in Scripture.