3 John 1:1 The elder unto the well beloved Gaius, whom I love in the truth.
As John writes this 3rd epistle we see he addresses someone he values as a good friend in Christ. He said he loved Gaius in truth which meant he truly loved him in a fashion consonant with the Christian meaning of that word. The reason that John thinks so much of him, is because he also is a student of truth. To be in the truth, it would have to be part of you. We could learn from this that there are probably people in our lives that we fell we are closer to than others because of the experiences we have had with them. Because we share things in truth with them we know we can count on them when we need someone to lean on.Also it helps us to see we need others in our life to help us to grow closer to God.