Acts 16:23-26

16:23 After they had beaten them severely, they threw them into prison and commanded the jailer to guard them securely. 16:24 Receiving such orders, he threw them in the inner cell and fastened their feet in the stocks.

16:25 About midnight Paul and Silas were praying and singing hymns to God, and the rest of the prisoners were listening to them. 16:26 Suddenly a great earthquake occurred, so that the foundations of the prison were shaken. Immediately all the doors flew open, and the bonds of all the prisoners came loose.