for he had often been bound with fetters and chains and had snapped the chains and broken the fetters ??nobody could tame him.

(For he had charged the unclean spirit to come out of the man. Many a time when it had seized hold of him, he had been fastened secure in fetters and chains, but he would snap his bonds and be driven by the daemon into the desert.)

(whereas, if you snap at each other and prey upon each other, take care in case you destroy one another).