'Chains' in the Bible

The word which came to Jeremiah from the Lord after Nebuzaradan captain of the bodyguard had released him from Ramah, when he had taken him bound in chains among all the exiles of Jerusalem and Judah who were being exiled to Babylon.

But now, behold, I am freeing you today from the chains which are on your hands. If you would prefer to come with me to Babylon, come along, and I will look after you; but if you would prefer not to come with me to Babylon, never mind. Look, the whole land is before you; go wherever it seems good and right for you to go.”