 Having received such a charge, he put them into inner prison and fastened their hands and their feet in stocks. Why were they arrested? For freeing a demon-possessed woman. But God intervened in a miraculous way. Why don't you listen to what I tell you what God did. In Acts 16, 25, by that midnight, Paul and Silas were praying and singing hymns to God. And the prisoners that were there were listening to them do this.