Acts 16:25-30 NIV

[25] About midnight Paul and Silas were praying and singing hymns to God, and the other prisoners were listening to them. [26] Suddenly there was such a violent earthquake that the foundations of the prison were shaken. At once all the prison doors flew open, and everyone’s chains came loose. [27] The jailer woke up, and when he saw the prison doors open, he drew his sword and was about to kill himself because he thought the prisoners had escaped. [28] But Paul shouted, “Don’t harm yourself! We are all here!” [29] The jailer called for lights, rushed in and fell trembling before Paul and Silas. [30] He then brought them out and asked, “Sirs, what must I do to be saved?”