He was numbered among the Seventy. Then, when Judas who betrayed Christ had taken his own life, the disciples (120 men and women) convened to choose one who would take his place among the Twelve. They nominated two, Joseph (called Barsabas or Justus) and Matthias, then cast lots. The lot fell to Matthais, who henceforth was numbered among the Twelve (See Acts ch. 1). Accounts of his Apostolate after this vary. According to some, he preached the Gospel in Ethiopia and met his martyrdom there. According to others, after visiting Ethiopia he returned to Judea, where he was tried and condemned by Ananias the High Priest, and stoned to death, then beheaded.