The apostle john supplemented his statements on Christian hospitality in 2 John with this late-first century letter to Gaius, a member of one of his churches. John applauded Gaius for living out the teachings of the apostles-he had welcomed traveling Christians missionaries into his home-while condemning Diotrephes, a selfish church leader who not only refused to help these itinerant, godly teachers but also had slandered John and opposed Gaius and anyone else who disagreed with him. This book demonstrates that pettiness can divide Christians if they are not living by God’s Word. To avoid the dual dangers of false teaching and division within the church, John encouraged believers to the dual challenge of love and discernment.