Jamieson, Fausset and Brown on Ezekiel 7:23

23. chain--symbol of the captivity (compare Jr 27:2). As they enchained the land with violence, so shall they be chained themselves. It was customary to lead away captives in a row with a chain passed from the neck of one to the other. Therefore translate as the Hebrew requires, "the chain," namely, that usually employed on such occasions. Calvin explains it, that the Jews should be dragged, whether they would or no, before God's tribunal to be tried as culprits in chains. The next words favor this: "bloody crimes," rather, "judgment of bloods," that is, with blood sheddings deserving the extreme judicial penalty. Compare Jr 51:9: "Her judgment reacheth unto heaven."