Acts 16:26-28

²⁶And suddenly there was an earth-shock, so that the base of the prison was moved: and all the doors came open, and everyone's chains came off.

²⁷And the keeper, coming out of his sleep, and seeing the prison doors open, took his sword and was about to put himself to death, fearing that the prisoners had got away.

²⁸But Paul said in a loud voice, Do yourself no damage, for we are all here.