'Chains' in the Bible

On that very night before Herod was going to bring him out for trial, Peter was sleeping between two soldiers, bound with two chains, while guards in front of the door were keeping watch over the prison.

Suddenly an angel of the Lord appeared, and a light shone in the prison cell. He struck Peter on the side and woke him up, saying, "Get up quickly!" And the chains fell off Peter's wrists.

Then the commanding officer came up and arrested him and ordered him to be tied up with two chains; he then asked who he was and what he had done.

Paul replied, "I pray to God that whether in a short or a long time not only you but also all those who are listening to me today could become such as I am, except for these chains."