Acts 15:27
Therefore we have sent Judas and Silas, themselves also proclaiming the same things by speech.
Acts 15:22
Then it seemed good to the apostles and the elders, along with the whole church, to send men chosen from them into Antioch along with Paul and Barnabas; Judas called Barsabbas, and Silas, leaders among the brethren:
Acts 15:32
Both Judas and Silas, themselves also being prophets, exhorted the brethren with elaborate speech, and strengthened them;
2 John 1:12
Having many things to write to you, I would not write them with paper and ink: but I hope to come to you, and mouth to mouth to speak to you, in order that our joy may be full.
3 John 1:13
Having many things to write to you, but I do not wish to write them to you with ink and paper: