Strong’s Greek
G3159 — Matthias
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
Μαθθίας
Matthias — pronounced mat-thee'-as
apparently a shortened form of 3161; Matthias (i.e. Mattithjah), an Israelite:--Matthias. see GREEK for 3161
2 occurrences in the KJV.
Acts 1:23
And they appointed two, Joseph called Barsabas, who was surnamed Justus, and Matthias.
Acts 1:26
And they gave forth their lots; and the lot fell upon Matthias; and he was numbered with the eleven apostles.