<p>2:28 <i>Therefore I have sent him more diligently, so that when you see him again, you may rejoice and that I may be less sorrowful</i>- Their joy would reduce Paul's sorrow, because their joy was his joy; see on :27. 2 Cor. 2:3 speaks in similar terms of the joy of the Corinthians being Paul's joy. This is the ideal of fellowship in the Spirit- our spirits are connected if we both have the Spirit of Christ. If we are focused only upon our own feelings then we will never achieve the joy which comes from caring for others' spiritual progress.</p>