3 John 12

"Demetrius is well spoken of by everyone - and even by the truth itself. We also speak well of him, and you know that our testimony is true." NIV translation

Now, we are introduced to the third man in the drama that was happening in this local group of believers. Evidently, Demetrius was a brother in Christ who had been sharing the gospel but was thrown out of the fellowship by Diotrephes. John tells his good friend Gaius that Demetrius was a wonderful man of God and that it was right to stand with him. 

Even today, there are "church leaders" who act the same as Diotrephes and we are called to stand with those that they persecute just as Gaius did for Demetrius.

3 John 13 & 14

"I have much to write to you, but I do not want to do so with pen and ink. I hope to see you soon, and we will talk face to face. Peace to you. The friends here send their greetings. Greet the friends there by name." NIV translation

Although it may be hard for us to understand, John preferred to talk to people face to face in the same manner that Jesus did. In our world today, everyone wants to send a text message or anything else to avoid direct contact but you have a much more honest and meaningful conversation when it is face to face.