1. The names of the apostles of our Saviour are known to every one from the Gospels. But there exists no catalogue of the seventy disciples. Barnabas, indeed, is said to have been one of them, of whom the Acts of the apostles makes mention in various places, and especially Paul in his Epistle to the Galatians.
2. They say that Sosthenes also, who wrote to the Corinthians with Paul, was one of them. This is the account of Clement in the fifth book of his Hypotyposes, in which he also says that Cephas was one of the seventy disciples, a man who bore the same name as the apostle Peter, and the one concerning whom Paul says, “When Cephas came to Antioch I withstood him to his face.”
3. Matthias, also, who was numbered with the apostles in the place of Judas, and the one who was honored by being made a candidate with him, are likewise said to have been deemed worthy of the same calling with the seventy. They say that Thaddeus also was one of them, concerning whom I shall presently relate an account which has come down to us. And upon examination you will find that our Saviour had more than seventy disciples, according to the testimony of Paul, who says that after his resurrection from the dead he appeared first to Cephas, then to the twelve, and after them to above five hundred brethren at once, of whom some had fallen asleep; but the majority were still living at the time he wrote.
4. Afterwards he says he appeared unto James, who was one of the so-called brethren of the Saviour. But, since in addition to these, there were many others who were called apostles, in imitation of the Twelve, as was Paul himself, he adds: “Afterward he appeared to all the apostles.” So much in regard to these persons. But the story concerning Thaddeus is as follows.
Reproduced in full. Translation: Nicene and Post-Nicene Fathers, series 2, vol. 1 (Schaff and Wace, 1890), public domain (Public domain).