The Gospel Goes Out: Season 3
Strengthening the Church
Paul encouraged believers, developed leaders, and strengthened churches throughout the Roman world. Healthy disciples grow in faith, encourage one another, and help others follow Jesus Christ.
The early Church grew stronger as believers taught, encouraged, and supported one another. Spiritual growth continues when Christians learn together, serve together, and walk together in faith.
3.4- Lesson 3.4- Strengthening the Church
Acts 18–20
Season 3: The Gospel Goes Out
Introduction
Planting churches was only the beginning.
As the gospel spread and new believers came to faith, the Church faced an important challenge: How could these new Christians grow stronger in their faith?
Paul understood that making disciples required more than preaching a sermon and moving on.
Believers needed encouragement.
Churches needed leadership.
Faith communities needed teaching, support, and guidance.
Acts 18–20 focuses on strengthening the Church. Paul revisited congregations he had helped establish, developed leaders, taught God’s Word, and encouraged believers to remain faithful.
These chapters remind us that discipleship is a lifelong journey. The goal is not simply to begin well but to continue growing in Christ.
The Church flourishes when believers help one another grow in faith.
Scripture References
Acts 18–20 (NASB)
Key Verse
“Therefore be on the alert, remembering that night and day for a period of three years I did not cease to admonish each one with tears.” — Acts 20:31 (NASB)
Historical Background
By this point in Acts, churches had been established throughout several regions of the Roman Empire.
Paul’s ministry increasingly focused on strengthening these congregations and developing leaders who could continue the work after he departed.
Several important figures emerged during this period, including Priscilla, Aquila, Apollos, Timothy, and the elders of the Ephesian church.
These leaders helped teach, mentor, and encourage believers.
Acts 18–20 demonstrates that the growth of the Church depends not only on evangelism but also on discipleship.
GROW Framework
Grounded in Scripture
Priscilla, Aquila, and Apollos
(Acts 18:24–28)
Apollos was a gifted teacher who loved God and knew the Scriptures.
However, his understanding was incomplete.
Priscilla and Aquila came alongside him, teaching him more accurately about Jesus Christ.
Their example reminds us that discipleship often happens through relationships and mentoring.
Spiritual growth is not a solo journey.
Ministry in Ephesus
(Acts 19:1–20)
Paul spent significant time in Ephesus teaching and strengthening believers.
God worked powerfully through the ministry there.
Many people came to faith.
Lives changed.
Old practices were abandoned.
The gospel transformed individuals and communities.
The Word of God continued spreading throughout the region.
Challenges and Opposition
(Acts 19:21–41)
As Christianity grew, not everyone welcomed the change.
Some opposed the gospel because it threatened their influence and financial interests.
A large disturbance arose in Ephesus.
Yet even in difficult circumstances, God’s mission continued moving forward.
The Church learned to remain faithful despite opposition.
Encouraging the Churches
(Acts 20:1–16)
Paul traveled through various regions encouraging believers and strengthening churches.
He understood that disciples need continual support and encouragement.
Christian growth happens over time.
Faith develops through teaching, fellowship, worship, service, and perseverance.
Paul’s Farewell to the Ephesian Elders
(Acts 20:17–38)
One of the most moving moments in Acts occurs when Paul meets with the elders from Ephesus.
Knowing they may never see each other again, Paul offers encouragement and instruction.
He reminds them to:
Remain faithful
Care for God’s people
Guard the truth
Serve with humility
Trust God’s grace
Paul’s words reveal the heart of a faithful spiritual leader.
Reasons We Believe
Spiritual Growth Requires Discipleship
People need encouragement, teaching, and guidance as they grow in faith.
Christian maturity develops over time.
God Uses Mentors and Teachers
Priscilla, Aquila, Paul, Timothy, and others invested in the lives of believers.
God often grows us through relationships.
The Gospel Changes Lives
The transformation seen in Ephesus demonstrates the power of God’s Word.
Faith affects how people live, think, and serve.
Leadership Matters
Healthy churches need faithful leaders who teach, encourage, and care for God’s people.
God calls believers to serve one another with humility and love.
Obedience in Action
Acts 18–20 challenges believers to ask:
Who has helped me grow in faith?
How can I encourage someone else spiritually?
Am I committed to continued growth as a disciple?
How can I serve within the Church?
What opportunities has God given me to mentor or support others?
The Church becomes stronger when believers invest in one another.
Walk It Out
Consider these questions:
Why was discipleship so important to Paul?
What can we learn from Priscilla and Aquila?
How did the gospel transform Ephesus?
What qualities do you see in Paul’s leadership?
Who has helped strengthen your faith journey?
Possible Responses
You may identify people who have encouraged and taught you throughout your life.
You may discover opportunities to mentor, teach, or support others.
You may feel challenged to become more intentional about spiritual growth.
Living the Message
The Church grows stronger when believers remain connected to one another.
Paul did not simply start churches.
He strengthened them.
He encouraged them.
He developed leaders.
He helped believers mature in faith.
The same mission continues today.
Every church needs people who teach, encourage, mentor, pray, serve, and help others grow closer to Christ.
Discipleship is not an event.
It is a lifelong journey.
Growing Together
Acts 18–20 reminds us that the Church is called not only to reach people but also to help them grow.
Healthy churches make disciples.
Healthy believers encourage others.
Healthy leaders serve faithfully.
The mission continues whenever Christians invest in one another and help others follow Jesus more closely.
Related Pages
Season 3: The Gospel Goes Out- Overview
Lesson 3.2: From Called to Sent
Lesson 3.3: The Gospel Crosses Boundaries
Season Three Conclusion
The gospel has moved beyond Jerusalem.
Barriers have been broken.
Missionaries have been sent.
Churches have been planted.
Believers have been strengthened.
The mission continues to expand.
Yet new challenges lie ahead.
Paul’s ministry will soon face trials, imprisonment, and uncertainty.
The next season explores how God’s mission remains unstoppable even when circumstances become difficult.
Next Season: Unstoppable
Acts 21–28
Learn more about Christian discipleship and spiritual growth through worship, study, prayer, service, and daily faith.
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