_In vincula Petro sponte delapsa, et apertas fores._ Act. xii. 7, 10.
Ferri non meminit ferrum: se vincula Petro
Dissimulant: nescit carcer habere fores.
Quam bene liber erit, carcer quem liberat! ipsa
Vincula quem solvunt, quam bene tutus erit!
_The chains spontaneously fell from Peter, and the (prison)-doors
opened._
Iron forgets 'tis iron;
the chains dissemble too;
Nor has the prison doors
for Peter now.
Free truly is that pris'ner
who by the prison's freed;
Whom chains themselves unbind
free is indeed.