What does Acts 18:5 mean?
Paul has been in Corinth without his team for a while, but he hasn't been alone. He left Timothy and Silas in Berea while he fled from angry Jewish Thessalonians to Athens (Acts 17:13–14). At first, he wanted his two partners to follow, but later changed his mind (Acts 17:15; 1 Thessalonians 3:6). After Athens, he went west to Corinth and met Priscilla and Aquila, two fellow tentmakers, and joined their business (Acts 18:1–3).Each Sabbath, Paul has gone to the synagogue, "reasoning" with the Jews and Gentle God-fearers that Jesus is the Messiah promised in the Hebrew Scriptures (Acts 18:4). Luke recorded one representative version of Paul's preaching (Acts 13:16–41) which is very close to the witness Stephen gave before his murder (Acts 7:1–53). Even though Paul is the apostle to the Gentiles (Romans 11:13), he always starts with the Jews: God's chosen people through whom the Savior of the world came (Romans 1:16). Some, like the leader of the synagogue, believe (Acts 18:8). Many others don't, and Paul leaves the synagogue, moving next door to the home of Titius Justus, a Gentile God-fearer who finds salvation in Jesus (Acts 18:6–7).
Paul and his team had been run out of both Thessalonica and Berea by Jews in Thessalonica, but Paul cared about the fledgling church and sent Timothy back (Acts 17:1–14; 1 Thessalonians 3:6). Timothy brings good news. Despite the fact the unbelieving Jews had dragged some of the Jesus-followers to the city authorities (Acts 17:6–9), and continued to persecute them after Paul left, they stand strong in the faith (1 Thessalonians 3:7–10). Paul will find the churches in Thessalonica and Corinth very different. The Thessalonians' strong faith and spiritual maturity will lead to questions about Christ's return (1 Thessalonians 4:13—5:11). The incredibly immoral sexual culture of Corinth will lead Paul to remind them of seemingly obvious boundaries: such as not sleeping with their stepmothers (1 Corinthians 5).