Acts 1:23

they appointed two Thus exercising their own judgment to a certain degree in the appointment, as they could rightly do from their three years intimacy with those who had been disciples from the beginning.

Joseph called Barsabas[Barsabbas in the best MSS.] who was surnamed Justus From the identity of the names Joseph and Joses (see note on Acts 1:14) it has been thought that this Joseph is identical with Joses surnamed Barnabas, mentioned Acts 4:36. But Barsabbas is apparently a patronymic like Bartimæus, while Barnabas is interpreted as a significant appellation in Acts 4:36 (see note there), so that there is no sufficient ground for the identification. The name Justus, being of Latin origin, was probably used by Joseph in his intercourse with the Gentile inhabitants of the country. Thus Saul takes a Latin name, Paulus, at the commencement of his missionary labours. So Simon had a Greek name, Peter (and may not Christ have given it to him as the name by which he should be known over all the world?), and Thomas was called Didymus. To judge from the mention of Joseph's three names, and from his standing first in order in the mention of the chosen pair, he was of more account among the Apostles than Matthias. Of his previous or future history we know nothing.

and Matthias He is said by Eusebius (H. E. 1. 12. 1) and Epiphanius (i. 20) to have been one of the Seventy, and there was an apocryphal Gospel which passed by his name (Euseb. iii. 23).