'Shackles' in the Bible

For he had often been bound with shackles [for the feet] and with chains, and he tore apart the chains and broke the shackles into pieces, and no one was strong enough to subdue and tame him.

suddenly there was a great earthquake, so [powerful] that the very foundations of the prison were shaken and at once all the doors were opened and everyone’s chains were unfastened.

Wretched and miserable man that I am! Who will [rescue me and] set me free from this body of death [this corrupt, mortal existence]?