What does Acts 16:25 mean?
Paul and Silas have been imprisoned, wrongly, at least from a certain point of view. It is true they "advocate customs that are not lawful" in the Roman Empire (Acts 16:20–21). Specifically, they are spreading the worship of a deity—Jesus—that is not authorized by the Roman government. In truth, their accusers charged them for financial reasons. Paul expelled a demon from a slave girl. The girl lost the ability to tell fortunes, and her owners lost the ability to use her to make money (Acts 16:16–19).Promoting the worship of an authorized god was a serious crime, but the city magistrates also broke the law when they beat and imprisoned two Roman citizens without trial (Acts 16:22–24). Paul and Silas don't know what will happen, but they know God is in control. Paul references this suffering in Philippi in his letter to the Thessalonians (1 Thessalonians 2:2). In that same letter, he will tell the Thessalonians, "Rejoice always, pray without ceasing, give thanks in all circumstances; for this is the will of God in Christ Jesus for you" (1 Thessalonians 5:16–18). And he will tell the Colossians that as Jesus suffered to offer salvation, he willingly suffers to spread Jesus' offer of salvation (Colossians 1:24).
Since Luke inserted himself into the narrative (Acts 16:10), the writing grew more personal and detailed. Verses 25–34 again feel impersonal and summarized. That doesn't mean this part isn't Scripture. Paul and Silas probably told Luke what happened, and the Holy Spirit directed him to include it. Verse 35 returns to the more personal, first-hand style (Acts 16:35).
Acts 16:25–40 records Paul's first imprisonment. The Philippian magistrates arrested Paul and Silas and had them beaten for spreading the news about Jesus. The two are now chained in a cell, praying and singing to God. An earthquake shakes the prison, releasing all the doors and chains. Paul assures the jailer no one has left, and the jailer tends to the pair's wounds. They share Jesus' offer of forgiveness of sins, and the jailer and his household accept Christ. In the morning, the magistrates attempt to release Paul and Silas, only to be confronted with their own crime: they have illegally punished two Roman citizens. After apologizing, the magistrates ask Paul and Silas to leave town.
Acts 16 follows Paul and Silas as they take the letter of Acts 15 into modern-day Asia Minor and Macedonia. They collect Timothy in Lystra and Luke in Troas. In Philippi, they meet Lydia and baptize her family. After expelling a demon from a fortune-telling girl, city officials illegally beat and imprison Paul and Silas. An earthquake frees them of their chains, but they stay and bring the jailer and his family to Christ. The next morning, Paul and Silas refuse to leave quietly, politely insisting that their civil rights have been violated. The officials apologize, and Paul, Silas, and Timothy go to Thessalonica.