'Fetters' in the Bible

because he had been often bound with fetters and chains, and the chains had been torn apart by him, and the fetters broken in pieces. Nobody had the strength to tame him.

For Jesus was commanding the unclean spirit to come out of the man. For the unclean spirit had often seized the man. He was kept under guard, and bound with chains and fetters. Breaking the bands apart, he was driven by the demon into the desert.