Acts 16:24-29
English Standard Version
25About midnight Paul and Silas were praying and singing hymns to God, and the prisoners were listening to them,
26and suddenly there was a great earthquake, so that the foundations of the prison were shaken. And immediately all the doors were opened, and everyone 's bonds were unfastened.
27When the jailer woke and saw that the prison doors were open, he drew his sword and was about to kill himself, supposing that the prisoners had escaped.
28But Paul cried with a loud voice, "Do not harm yourself, for we are all here."
29And the jailer called for lights and rushed in, and trembling with fear he fell down before Paul and Silas.