Acts 16:25 in the World English Bible
But about midnight Paul and Silas were praying and singing hymns to God, and the prisoners were listening to them.
Context
24 Who, having received such a charge, thrust them into the inner prison, and made their feet fast in the stocks.
25 And at midnight Paul and Silas prayed, and sang praises unto God: and the prisoners heard them.
26 And suddenly there was a great earthquake, so that the foundations of the prison were shaken: and immediately all the doors were opened, and every one’s bands were loosed.