And that he was seen of Cephas, then of the twelve:
Read Chapter 15
Cornelius a Lapide
AD 1637
Was seen of Cephas. Paul puts this appearance of Christ first, and therefore implies that the first man that Christ appeared to was Peter. I say "the first Prayer of Manasseh ," for He appeared to the Magdalene before S. Peter (S. Mark 16:9).
Then of the eleven. On the Sunday after the resurrection, when Thomas was now present, Christ appeared to the eleven, for the twelfth, Judas, had by that time hanged himself, or better still, "to the eleven," i.e, to the whole Apostolic College, which then had been reduced to eleven, Christ appeared on the day of His resurrection, though Thomas was absent. The Greek copies have, "then of the twelve." S. Augustine has the same reading (Qust. Evangel lib. i. qu117), and he says there that, though Judas was dead, "the twelve" were still so called as by a corporate name. So the Decemvirs are said to assemble if only seven or eight are present. Chrysostom explains it otherwise. He says that Christ appeared to the twelfth, Matthias, after His ascensio...
The gospel tells us that he appeared first to Mary. But as far as men were concerned, he appeared first to those who most wanted to see him. But which of the apostles are meant here? For Matthias was not added to their number until after the ascension. However, it is likely that Christ appeared even after his ascension into heaven. Paul does not specify the time but merely records the experience.
Note that he does not say “to the eleven,” and neither does John (Jn :), who writes that Thomas was “one of the twelve.” We should probably say that either he has included Matthias with the other apostles by anticipation or else that he is still thinking of Judas, even after his betrayal and hanging. .
But concerning the apostles and prophets, according to the decree of the Gospel, thus do. 4. Let every apostle that cometh to you be received as the Lord.