Acts 12:6-7

6It was the night before King Herod wanted to bring Peter out of the prison and judge him. The soldiers had tied Peter to themselves with chains. So Peter was sleeping between two soldiers. Some other soldiers were guarding the doors of the prison.

7Then, an angel from the Lord God suddenly appeared in the prison. A bright light shone in the room where Peter was sleeping. The angel touched Peter's shoulder so that Peter woke up. He said to Peter, ‘Hurry! Stand up!’ Immediately the chains fell off Peter's hands.