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Acts 18: Building Up the Church in Corinth and Ephesus

Paul ministers in Corinth, is encouraged by God, and Apollos is mentored.

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Acts 18 (WEB)

1 After these things Paul departed from Athens, and came to Corinth.

2 He found a certain Jew named Aquila, a man of Pontus by race, who had recently come from Italy, with his wife Priscilla, because Claudius had commanded all the Jews to depart from Rome. He came to them,

3 and because he practiced the same trade, he lived with them and worked, for by trade they were tent makers.

4 He reasoned in the synagogue every Sabbath, and persuaded Jews and Greeks.

5 But when Silas and Timothy came down from Macedonia, Paul was compelled by the Spirit, testifying to the Jews that Jesus was the Christ.

6 When they opposed him and blasphemed, he shook out his clothing and said to them, “Your blood be on your own heads! I am clean. From now on, I will go to the Gentiles!”

7 He departed there, and went into the house of a certain man named Justus, one who worshiped God, whose house was next door to the synagogue.

8 Crispus, the ruler of the synagogue, believed in the Lord with all his house. Many of the Corinthians, when they heard, believed and were baptized.

9 The Lord said to Paul in the night by a vision, “Don’t be afraid, but speak and don’t be silent;

10 for I am with you, and no one will attack you to harm you, for I have many people in this city.”

11 He lived there a year and six months, teaching the word of God among them.

12 But when Gallio was proconsul of Achaia, the Jews with one accord rose up against Paul and brought him before the judgment seat,

13 saying, “This man persuades men to worship God contrary to the law.”

14 But when Paul was about to open his mouth, Gallio said to the Jews, “If indeed it were a matter of wrong or of wicked crime, you Jews, it would be reasonable that I should bear with you;

15 but if they are questions about words and names and your own law, look to it yourselves. For I don’t want to be a judge of these matters.”

16 So he drove them from the judgment seat.

17 Then all the Greeks laid hold on Sosthenes, the ruler of the synagogue, and beat him before the judgment seat. Gallio didn’t care about any of these things.

18 Paul, having stayed after this many more days, took his leave of the brothers, and sailed from there for Syria, together with Priscilla and Aquila. He shaved his head in Cenchreae, for he had a vow.

19 He came to Ephesus, and he left them there; but he himself entered into the synagogue, and reasoned with the Jews.

20 When they asked him to stay with them a longer time, he declined;

21 but taking his leave of them, he said, “I must by all means keep this coming feast in Jerusalem, but I will return again to you if God wills.” Then he set sail from Ephesus.

22 When he had landed at Caesarea, he went up and greeted the assembly, and went down to Antioch.

23 Having spent some time there, he departed, and went through the region of Galatia, and Phrygia, in order, establishing all the disciples.

24 Now a certain Jew named Apollos, an Alexandrian by race, an eloquent man, came to Ephesus. He was mighty in the Scriptures.

25 This man had been instructed in the way of the Lord; and being fervent in spirit, he spoke and taught accurately the things concerning Jesus, although he knew only the baptism of John.

26 He began to speak boldly in the synagogue. But when Priscilla and Aquila heard him, they took him aside, and explained to him the way of God more accurately.

27 When he had determined to pass over into Achaia, the brothers encouraged him, and wrote to the disciples to receive him. When he had come, he greatly helped those who had believed through grace;

28 for he powerfully refuted the Jews, publicly showing by the Scriptures that Jesus was the Christ.

Summary

In Corinth Paul meets Aquila and Priscilla, fellow tentmakers, and works alongside them while teaching in the synagogue. When opposition grows, God encourages Paul in a vision to keep speaking, and he stays for a year and a half. A legal challenge before the proconsul Gallio is dismissed, and Paul eventually travels on toward Ephesus and Antioch. Meanwhile, an eloquent teacher named Apollos is taught more accurately by Priscilla and Aquila and goes on to strengthen the believers.

Main Characters

  • Paul — Establishes the church in Corinth and is encouraged by God to persevere.
  • Aquila and Priscilla — A married couple who partner with Paul and mentor Apollos.
  • Apollos — An eloquent teacher who is helped to understand the way of God more fully.
  • Gallio — A Roman proconsul who refuses to hear the case against Paul.

Key Verse

Acts 18:9-10 (WEB)

The Lord said to Paul in the night by a vision, “Don’t be afraid, but speak and don’t be silent; for I am with you, and no one will attack you to harm you, for I have many people in this city.”

Lessons Learned

  • God encourages his servants to persevere when they grow weary or afraid.
  • Ordinary believers play a vital role in teaching and mentoring others.
  • Partnership and friendship strengthen the work of ministry.
  • Even gifted teachers can keep growing in their understanding.
  • God meets us in our fear. When Paul faced rising opposition in Corinth, God gave him a direct, personal word of assurance — "Don't be afraid" — showing that divine encouragement is available even to seasoned missionaries (Acts 18:9–10, WEB).
  • Faithful work opens doors for witness. Paul's tentmaking alongside Aquila and Priscilla was not a distraction from ministry but a doorway into it, illustrating that ordinary labor can serve the mission of God.
  • Community protects the messenger. Rather than remaining isolated, Paul worked within a network of believers and co-laborers, and God's promise that "I have many people in this city" signals that mission is never a solo task (Acts 18:10, WEB).
  • Humble correction advances the gospel. Priscilla and Aquila took Apollos aside privately rather than publicly rebuking him, demonstrating that the manner of correction is as important as its content (Acts 18:26, WEB).
  • Continued learning marks mature disciples. Apollos was already gifted and fervent, yet he remained teachable; growth in understanding the way of God is a lifelong calling, not a stage to be completed.
  • Providential appointments shape ministry paths. Paul's brief but fruitful stop in Ephesus, his return to Antioch, and Apollos's subsequent move to Achaia all reflect a pattern of Spirit-directed movement that advances the church beyond any single leader's plans.
  1. How does God encourage Paul, and why might he have needed it?
  2. What do you notice about the partnership of Priscilla and Aquila?
  3. How do they help Apollos, and what does that model for us?
  4. Why is it significant that even Apollos had more to learn?
  5. Who has mentored you, and whom might you encourage?
  1. God encouraged Paul through a nighttime vision, telling him not to be afraid, to keep speaking, and promising that no one would harm him because God had many people in the city (Acts 18:9–10, WEB). Paul likely needed this because the synagogue opposition had intensified — he had just shaken out his garment and declared he would turn to the Gentiles (Acts 18:6, WEB) — and he had already faced hardship in Philippi, Thessalonica, Berea, and Athens. The vision was a direct divine assurance that his work in Corinth was not in vain.
  2. Look for responses that note Priscilla and Aquila appear consistently as a united, active couple — both names are given every time they are mentioned. They opened their home to Paul, worked alongside him in tentmaking, traveled with him to Ephesus, and took the initiative to invest in Apollos's development (Acts 18:2–3, 18–19, 26, WEB). Leaders may draw out how the partnership of husband and wife in ministry is modeled here, and how both lay people and traveling workers can share the load of the mission.
  3. When Priscilla and Aquila heard Apollos speaking boldly in the synagogue, they took him aside privately and explained the way of God more accurately — specifically filling in what he lacked beyond the baptism of John (Acts 18:25–26, WEB). This models humble, relational correction over public confrontation: they did not silence or dismiss him but invested in him. For the group, it raises the question of what contexts or relationships in our own lives could serve the same mentoring function.
  4. Look for responses that engage with the tension between giftedness and incompleteness. Apollos was eloquent, mighty in the Scriptures, fervent in spirit, and already teaching accurately about Jesus — yet he had a significant gap in understanding (Acts 18:24–25, WEB). The significance is that no amount of natural ability or prior training makes further learning unnecessary. Participants may also note that Apollos's teachability — his willingness to receive correction from a tentmaking couple — was as important as his eloquence.
  5. This is a personal reflection question. Look for honest, specific responses rather than general answers. Encourage participants to name the person or people who shaped their faith or understanding, and to think concretely about who in their current circle might benefit from deliberate encouragement or teaching — whether a newer believer, a coworker, or someone exploring faith. Relevant texts for further reflection: 2 Timothy 2:2; Hebrews 10:24–25.

Scripture quotations are from the World English Bible (WEB), the King James Version (KJV), and the American Standard Version (ASV), all of which are in the public domain.