Acts 1:23

“But it is fitting to subjoin to the words of Papias which have been quoted, other passages from his works in which he relates some other wonderful events which he claims to have received from tradition. That Philip the apostle dwelt at Hierapolis with his daughters has been already stated. But it must be noted here that Papias, their contemporary, says that he heard a wonderful tale from the daughters of Philip. For he relates that in his time one rose from the dead. And he tells another wonderful story of Justus, surnamed Barsabbas: that he drank a deadly poison, and yet, by the grace of the Lord, suffered no harm. The Book of Acts records that the holy apostles after the ascension of the Saviour, put forward this Justus, together with Matthias, and prayed that one might be chosen in place of the traitor Judas, to fill up their number. The account is as follows: "And they put forward two, Joseph, called Barsabbas, who was surnamed Justus, and Matthias; and they prayed and said." [Acts 1:23]”

“"And they appointed two, Joseph called Barsabus, who was surnamed Justus, and Matthias." Not he appointed them: but it was he that introduced the proposition to that effect, at the same time pointing out that even this was not his own, but from old time by prophecy; so that he acted as expositor, not as preceptor. "Joseph called Barsabus, who was surnamed Justus." Perhaps both names are given, because there were others of the same name, for among the Apostles also there were several names alike; as James, and James (the son) of Alphaeus; Simon Peter, and Simon Zelotes; Judas (the brother) of James, and Judas Iscariot. The appellation, however, may have arisen from a change of life, and very likely also of the moral character. "And they appointed two," it is said. Why not many? That the feeling of disappointment might not reach further, extending to many. Again, it is not without reason that he puts Matthias last; he would show, that frequently he that is honourable among men, is inferior before God.”

“They choose two: Joseph, surnamed the Just, and Matthias—a name, as they say, that means "God's small one" in the Hebrew language, and by calling [him, God] confirms him as humble. Oh, how different are human from heavenly judgments! He who was just according to the praise of humankind is surpassed by the merit of a small one.”

“And they appointed two, Joseph who was called Barsabbas, who was surnamed Justus. In Greek it is more detailed: And having said these things, they appointed two: Joseph who was called Barsabbas, who was surnamed Justus, and Matthias. Where we in this sentence read Justus, in the Greek also Justus is written. If we believe it to be a Latin name, it seems that this man was of such virtue that even the Romans, who could have known him, gave him the name of justice. But if it is a Hebrew name, it can be interpreted as "sparing" or "he himself uplifted," as Jerome teaches in the Book of Hebrew Names. What is called Justus in Latin, in Hebrew is Sadoch, and in Greek is called δίκαιος. Furthermore, Clement of Alexandria, a most learned man in all respects, reports that both those appointed to the lot of apostleship were from the number of the seventy disciples.”

“"And they appointed two." Why not many? So that no great disorder would arise, and besides, the matter concerned only a few. What kind of men were they? Perhaps they were from the number of the Seventy who had been with the twelve apostles, or from other believers, but more fervently believing and more devout than the rest. Such were both Joseph and Matthias. He calls Joseph both Barsabbas and Justus, perhaps because among them these names referred to one person; but perhaps a new name was also given on account of a change in way of life; finally, the surname was perhaps assigned according to one's occupation. Why does James, who had received the episcopate in Jerusalem, not begin the discourse, but yields the right to address the people to Peter? Because he was filled with humility; at that time they thought nothing of human considerations, but had in view the common benefit. For this very same reason the apostles also yield the seat to him and do not rival him, and do not contend with him.”