Walter Vermeylen (Viaduct, Néris-les-Bains, Auvergne, France)
A Study of 3 John
Author: Stephen Weller
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Page Index
3 John 1 – The Example of Gaius and the Warning of Diotrephes
Introduction to 3 John
Bible Project – An Overview of 1, 2, and 3 John
Context for 3 John
3 John is the shortest letter in the New Testament by word count and was written by the Apostle John the Apostle near the end of the first century, likely from Ephesus. The letter is addressed to a faithful believer named Gaius, whom John loved deeply and commended for his commitment to the truth and his generous support of traveling Christian workers. During this period, the early church depended heavily on the hospitality of believers who provided lodging, food, and encouragement for missionaries and teachers as they traveled from place to place proclaiming the gospel. John writes to encourage Gaius to continue this ministry and to assure him that such support makes believers fellow workers with the truth.
A major concern in the letter is the troubling behavior of a church leader named Diotrephes. Unlike Gaius, Diotrephes sought personal prominence and authority within the church. He rejected apostolic instruction, spread malicious accusations against John and his associates, refused to welcome faithful Christian workers, and even expelled church members who showed them hospitality. His actions threatened the unity and spiritual health of the congregation. John therefore contrasts Diotrephes’ selfish ambition with the godly example of Gaius and urges believers not to imitate evil but to imitate what is good.
The letter also commends another believer, Demetrius, who had earned a good reputation among the churches and was likely either the bearer of the letter or a Christian worker whom John wished the church to receive warmly. Through these three men, Gaius, Diotrephes, and Demetrius, John presents living examples of faithfulness, pride, and godly character. The letter emphasizes the importance of walking in the truth, supporting gospel ministry, exercising servant leadership, and demonstrating Christian love through practical actions.
Although brief, 3 John provides a valuable glimpse into the challenges faced by the early church. It reveals that even apostolic-era congregations struggled with pride, authority, hospitality, and relationships. At the same time, it shows that faithfulness is measured not merely by correct doctrine but by living out the truth through love, humility, and service to others.
Major Themes in 3 John
1. Walking in the Truth
One of the central themes of 3 John is the importance of living according to God’s truth. John commends Gaius because his life demonstrates faithfulness to the gospel. Truth is not merely something to be believed intellectually; it is to be practiced daily. The Christian life is marked by obedience to Christ, integrity of character, and consistency between belief and behavior. John expresses great joy when believers continue to walk in the truth and remain faithful to the teachings they have received.
Key Verses: 3 John 1:3–4
2. Christian Hospitality
John highly praises Gaius for showing hospitality to traveling believers and gospel workers. Hospitality was essential in the early church because missionaries depended upon the support of fellow Christians as they traveled from place to place. By welcoming and assisting faithful servants of Christ, believers become partners in the advancement of the gospel. This theme emphasizes generosity, service, and practical expressions of Christian love.
Key Verses: 3 John 1:5–8
3. Partnership in the Gospel
The letter teaches that all believers can participate in God’s work, even if they are not the ones preaching or traveling. Those who provide encouragement, resources, and support for gospel workers share in their ministry. John reminds believers that supporting faithful servants of God makes them fellow workers for the truth. The spread of the gospel is a shared responsibility among all Christians.
Key Verses: 3 John 1:8
4. Servant Leadership versus Selfish Ambition
John contrasts the faithful example of Gaius and Demetrius with the prideful behavior of Diotrephes. Diotrephes sought prominence and authority for himself rather than serving Christ and His people. His actions demonstrate the danger of pride, self-centered leadership, and rejection of godly authority. The letter teaches that Christian leadership should be characterized by humility, service, and submission to God’s truth.
Key Verses: 3 John 1:9–10
5. The Importance of Godly Examples
John presents two contrasting examples: Diotrephes, whose behavior should not be imitated, and Demetrius, whose life reflects a good testimony. Believers are encouraged to follow those whose lives demonstrate godliness and faithfulness. The Christian life is often strengthened through observing and imitating mature believers who model obedience to Christ.
Key Verses: 3 John 1:11–12
6. Doing Good as Evidence of Belonging to God
John teaches that a person’s actions reveal the reality of their spiritual condition. Those who belong to God will seek to do good, while those who persist in evil demonstrate that they do not truly know Him. Good works do not save a person, but they serve as evidence of a genuine relationship with God and a transformed life.
Key Verses: 3 John 1:11
7. Fellowship and Encouragement Among Believers
The letter closes with a warm expression of Christian friendship and fellowship. John desires to meet face-to-face rather than rely solely on written communication. Healthy relationships among believers provide encouragement, accountability, and mutual support. The church is portrayed as a family united by faith, truth, and love.
Key Verses: 3 John 1:13–15
Key Theme Summary
3 John emphasizes
- walking in the truth
- supporting the work of the gospel through hospitality
- practicing humble and faithful leadership
- following godly examples
- maintaining loving fellowship within the church
Through the examples of Gaius, Diotrephes, and Demetrius, John shows how believers should live in a manner that advances the truth and honors Christ.
Chapter 1 – Walking in the Truth with Love
Chapter Introduction
3 John offers a brief but vivid window into the relational life of the early church, highlighting the difference between genuine, Christ‑honoring leadership and self‑serving authority. John commends Gaius for his faithful walk in the truth and his generous hospitality toward traveling gospel workers, contrasting his character with Diotrephes, whose pride and hostility disrupt the church. The letter encourages believers to imitate what is good, support those who labor for the gospel, and cultivate a community shaped by truth, love, and integrity.
Chapter Lesson Index
- 1.1 3 John Introduction
- 1.2 3 3 John 1:1-4 Greeting to the Beloved Gaius
- 1.3 3 John 1:5-8 Gaius Pleases John
- 1.4 3 John 1:9-10 Concern about Diotrephes
- 1.5 3 John 1:11-12 Advice and Commendation of Demetrius
- 1.6 3 John 1:13-15 John’s Final Greetings
Chapter Questions and Answers
Bible Lessons
1.1 3 John Introduction
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1.2 3 John 1:1-4 Greeting to the Beloved Gaius
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1.3 3 John 1:5-8 Gaius Pleases John
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1.4 3 John 1:9-10 Concern about Diotrephes
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1.5 3 John 1:11-12 Advice and Commendation of Demetrius
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1.6 3 John 1:13-15 John’s Final Greetings
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Questions with Answers
1. Who is the author of 3 John, and why does he call himself “the elder”?
Answer:
The author identifies himself as “the elder,” a title that most scholars understand to refer to the Apostle John. By the time this letter was written, John was an elderly and respected leader in the church. Rather than emphasizing his apostolic authority, he uses a title that reflects both his age and his pastoral role. This reveals John’s humility and his close relationship with the believers under his care. He writes as a spiritual father who is concerned about the health, unity, and faithfulness of the church.
2. Who was Gaius, and why did John write to him?
Answer:
Gaius was a faithful Christian who was known for his commitment to the truth and his hospitality toward traveling Christian workers. John writes to encourage him and commend him for his faithful service. The letter shows that Gaius was supporting missionaries and teachers who traveled from church to church proclaiming the gospel. John wanted Gaius to know that his efforts were valuable and that he should continue serving God’s people despite opposition from others within the church.
Key Verse: 3 John 1:5-6
3. What does John mean when he says he has “no greater joy” than hearing his children walk in truth?
Answer:
John is speaking as a spiritual father. His greatest joy was not found in personal success, wealth, or recognition, but in seeing believers remain faithful to Christ. To “walk in truth” means more than believing correct doctrine; it means living according to God’s Word every day. John rejoiced when he heard that Christians were obeying God, growing spiritually, and demonstrating Christlike character. This statement reminds believers that spiritual growth and faithful living are among the most important measures of success in God’s kingdom.
Key Verse: 3 John 1:4
4. What is the relationship between truth and love in this letter?
Answer:
John consistently joins truth and love together. True Christianity is built upon sound doctrine and loving action. Gaius demonstrated both. He believed the truth of the gospel and expressed that truth through acts of kindness and hospitality. John teaches that genuine faith is not merely intellectual knowledge; it is truth lived out through loving service. A church that possesses truth without love becomes cold, while love without truth becomes misguided. The Christian life requires both.
Key Verses: 3 John 1:3-6
5. Why was hospitality so important in the early church?
Answer:
During the first century, Christian missionaries and teachers often traveled long distances to spread the gospel. There were few safe places for them to stay, and many inns were known for immoral conditions. Churches depended on faithful believers who would provide food, lodging, and support for these workers. By opening their homes, believers became partners in gospel ministry. Hospitality was not simply kindness; it was a practical way of advancing the mission of Christ.
Key Verse: 3 John 1:8
6. What does John mean when he says believers become “fellow workers for the truth”?
Answer:
John explains that those who support gospel workers share in the ministry itself. Not everyone is called to travel and preach, but all believers can contribute to the spread of the gospel through prayer, encouragement, financial support, and hospitality. When Christians help faithful servants of God, they participate in God’s work. This principle teaches that every believer has a role in advancing Christ’s kingdom.
Key Verse: 3 John 1:8
7. Who was Diotrephes, and why does John rebuke him?
Answer:
Diotrephes was a church leader who desired prominence and authority for himself rather than serving Christ humbly. John says that he loved to be first among the believers. He rejected apostolic authority, spread false accusations, refused to welcome faithful Christian workers, and even expelled believers who showed hospitality. His behavior demonstrated pride, selfish ambition, and abuse of leadership. John presents Diotrephes as a warning against leaders who seek personal power instead of serving God’s people.
Key Verses: 3 John 1:9-10
8. What lessons can church leaders learn from the example of Diotrephes?
Answer:
Diotrephes illustrates the dangers of pride and self-centered leadership. Christian leaders are called to serve rather than dominate, to encourage rather than control, and to point people toward Christ rather than themselves. Spiritual authority must always be exercised with humility, truth, and love. The church belongs to Christ, not to any individual leader. Diotrephes reminds believers that leadership without humility can damage both people and ministry.
Key Verses: 3 John 1:9-10
9. Who was Demetrius, and why does John commend him?
Answer:
Demetrius was a believer whose life reflected a good reputation among Christians. John states that he received a good testimony from everyone and from the truth itself. Unlike Diotrephes, whose life displayed pride and opposition, Demetrius demonstrated godly character and faithfulness. John presents him as an example worthy of imitation. His reputation was built not merely on words but on a life that consistently reflected Christ.
Key Verse: 3 John 1:12
10. Why does John tell believers to imitate what is good and not what is evil?
Answer:
Believers are constantly influenced by the examples around them. John contrasts Diotrephes and Demetrius to show the importance of choosing the right model to follow. Those who do good demonstrate that they belong to God, while those who persist in evil reveal a lack of genuine fellowship with Him. Christians are called to follow examples that reflect Christ’s character and God’s truth.
Key Verse: 3 John 1:11
11. What does 3 John teach about Christian character?
Answer:
The letter highlights several essential qualities of Christian character: faithfulness to the truth, hospitality, generosity, humility, love, and a willingness to support God’s work. Gaius and Demetrius display these qualities, while Diotrephes demonstrates the opposite. John shows that genuine Christianity is revealed not only by what a person professes but by how that person lives. Godly character is evidence of spiritual maturity.
12. How does 3 John contribute to the overall message of the New Testament?
Answer:
3 John emphasizes themes that appear throughout the New Testament: walking in truth, loving fellow believers, supporting gospel ministry, exercising godly leadership, and maintaining faithful Christian witness. Though it is the shortest book in the New Testament by word count, it provides practical instruction for church life. The letter demonstrates that the success of the gospel depends not only on preachers and missionaries but also on faithful believers who support and encourage them.
13. What is the central message of 3 John?
Answer:
The central message of 3 John is that believers should faithfully walk in the truth and support the work of the gospel while rejecting prideful and self-centered behavior. Through the examples of Gaius, Diotrephes, and Demetrius, John shows the difference between godly and ungodly conduct. The letter calls Christians to live faithfully, serve others generously, support those who proclaim the truth, and imitate examples that honor Christ.
Key Verse: 3 John 1:11
“Beloved, do not imitate what is evil but what is good. He who does good is of God, but he who does evil has not seen God.”
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