'Fetters' in the Bible

because he had been often bound with fetters and chains, and the chains had been torn asunder by him, and the fetters were shattered; and no one was able to subdue him.

For he had commanded the unclean spirit to go out from the man. For very often it had seized him; and he had been bound, kept with chains and fetters; and breaking the bonds he was driven by the demon into the deserts.