Acts 15:27
We have sent therefore Judas and Silas, and they by word of mouth will tell you the same things.
Acts 15:22
Then it was determined by the apostles and presbyters with the whole church, to send select men from themselves unto Antioch with Paul and Barnabas; Judas surnamed Barsabas, and Silas, leading men among the brethren;
Acts 15:32
Then Judas and Silas, being also themselves prophets, exhorted the brethren, in many a discourse, and established them.
2 John 1:12
Having many things to write unto you, I would not do it with paper and ink; but I hope to come unto you, and speak mouth to mouth, that our joy may be complete.
3 John 1:13
I had many things to write; but I would not write to thee with ink and pen: