Acts 16:22-27

²²And the crowd rose up together against them; and the magistrates tore their clothes and ordered men to beat them with rods.

²³And when they laid many strokes on them, they cast them into prison, commanding the prison keeper to keep them securely;

²⁴who, having received such a command, cast them into the inner prison and fastened their feet in the stocks.

²⁵Now about 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 all the bonds were loosed.

²⁷And becoming awake, the prison keeper, seeing the doors of the prison open, drawing a sword, he was about to kill himself, supposing the prisoners to have escaped.