'Chains' in the Bible

On the very night when Herod was about to bring him forward, Peter was sleeping between two soldiers, bound with two chains, and guards in front of the door were watching over the prison.

And behold, an angel of the Lord suddenly appeared and a light shone in the cell; and he struck Peter’s side and woke him up, saying, “Get up quickly.” And his chains fell off his hands.

and suddenly there came a great earthquake, so that the foundations of the prison house were shaken; and immediately all the doors were opened and everyone’s chains were unfastened.

Then the commander came up and took hold of him, and ordered him to be bound with two chains; and he began asking who he was and what he had done.

Therefore those who were about to examine him immediately let go of him; and the commander also was afraid when he found out that he was a Roman, and because he had put him in chains.

And Paul said, “I would wish to God, that whether in a short or long time, not only you, but also all who hear me this day, might become such as I am, except for these chains.”