3 John: Summary: It is well with Gaius' soul. But not all is well in his local church. Missionaries approved by John and his church have been loved faithfully by Gaius, but Diotrephes, for reasons the letter states, opposes any and everyone who seeks the heart of the congregation for the glory of Jesus in the world. John encourages Gaius to return good for evil. As he needs an example and confidant in the path of faithfulness and goodness, John pegs Demetrius as a pillar of grace. Gaius is not alone in his ambition, against opposition, to see the church at peace in the things that prove them healthy in the Lord. On the whole then, 3 John offers a look into the dynamics of spiritual wellness, which, as ever, is judged by its doctor: Truth. Some of the dynamics establishing credible spiritual health. (3 John 1-4) church. (3 John 3a) truth. (3 John 3a) life. (3 John 3b) aim. (3 John 4) Some of the displays encouraging credible spiritual health. (3 John 5-15) Gaius and healthy missiological generosity. (3 John 5-8) Diotrephes and necessary ecclesiological humility. (3 John 9-10) Demetrius and reliable theological accountability. (3 John 11-15)