"And the angel said unto him, Gird thyself, and bind on thy sandals. And so he did"

There is a vividness of detail about this story which assures us that facts are being recorded. No imagination, however lively, could have conceived the scene that is presented here.
When a man has played a part in some great hour or been an eyewitness of some memorable action, there is a note in his telling of it, no matter how he blunders, which is better than all the periods of historians.
And unless we be blinded by a foolish prejudice which deadens the literary as well as other faculties, we cannot but distinguish that note here.
Peter had been in prison once before, and once before he had escaped miraculously. Now, having in their hands again this prison-breaker, the authorities were determined there should be no more miracles.
But when prayer arises like a continual incense and when God puts out His mighty arm to help, "stone walls do not a prison make, nor iron bars a cage."