This sermon examines the dichotomy between truth and lies as presented in 3 John, contrasting the selfish hindering of the gospel by Diotrephes with the selfless promotion of truth by Demetrius and the apostle John. The message identifies four specific ways Diotrephes obstructed the spread of the gospel: seeking preeminence, silencing counsel, slandering disciples, and separating brethren. In contrast, the sermon highlights how a godly life, a good reputation, and personal counsel serve as effective vehicles for promoting the truth. The preacher urges believers to examine their own hearts for pride and self-exaltation, reminding them that all spiritual gifts and positions are received from God. The central call is to boast only in the Lord and to strive for holiness, ensuring that Christ increases while the individual decreases.