3 John 1:14

But I trust I shall shortly see thee, and we shall speak face to face. Peace be to thee. Our friends salute thee. Greet the friends by name.

John held back many things he could have put in writing to Gaius, declining to set them down with pen and ink. He did so because he confidently expected to see Gaius in a short time. That coming visit would allow the two to talk together directly, face to face.