Justus in Easton's Bible Dictionary

(1.) Another name for Joseph, surnamed Barsabas. He and Matthias are mentioned only in Acts 1:23. "They must have been among the earliest disciples of Jesus, and must have been faithful to the end; they must have been well known and esteemed among the brethren. What became of them afterwards, and what work they did, are entirely unknown" (Lindsay's Acts of the Apostles). (2.) A Jewish proselyte at Corinth, in whose house, next door to the synagogue, Paul held meetings and preached after he left the synagogue (Acts 18:7). (3.) A Jewish Christian, called Jesus, Paul's only fellow-labourer at Rome, where he wrote his Epistle to the Colossians (Col. 4:11).