In verse three we have that Gaius had a good report by his fellow Christians in the Church. He was known as one of John’s spiritual sons, perhaps a convert. We have a phrase used for Gaius that he gave John joy because he walked in Truth. This must have been his practice.
Up to verse 8 it is about the faithfulness of Gaius. What I want to say is this, if John was going to write a letter to you or I would he have some of the same things that he said about Gaius? All I could say is I hope so. However we are all not the same. I wish that the rest of John’s letter would be as positive as these 8 verses but it is not.