Matthias, Maththias identifies the man set forward and then added to the eleven apostles after the lot fell to him.

The term identifies the same man in the selection process: he is set forward with another candidate in Acts 1:23 and is added to the eleven apostles after the lot falls to him in Acts 1:26.

1. Personal name in the selection of an apostle · dominant

   The accusative singular masculine form identifies the man named alongside Joseph in Acts 1:23, where the APB renders that two were set forward. In Acts 1:26, the same form identifies the man to whom the lot fell and who was added to the eleven apostles.

   Acts 1:23Acts 1:26

In the Anselm Project Bible: The APB presents the name as “Matthias” in both verses: first among the two set forward and then as the recipient of the lot. It confirms the verse-level identification rather than a separate lexical rendering.