The successor of Judas as an Apostle. Little is known about him. Possibly he was one of the seventy-two disciples Luke referred to (Luke 10:1), because Peter, in arranging the replacement, insisted that it should be someone "who has been with us the whole time that the Lord Jesus was traveling round with us." Matthias and Barsabbas were chosen as worthy candidates. Lots were drawn and Matthias was selected (Acts 1:21-26).