Acts 15:22; Acts 15:27

22 Then the apostles and elders, with the whole church, decided to choose some of their own men and send them to Antioch with Paul and Barnabas. They chose Judas (called Barsabbas) and Silas, men who were leaders among the believers.

27 Therefore we are sending Judas and Silas to confirm by word of mouth what we are writing.