'Bars' in the Bible

"Go, and you must say to Hananiah, {saying}, 'Thus says Yahweh, "You have broken yoke bars of wood, but you have made in place of them yoke bars of iron."

Rise up, go up against a nation [which is] at ease, living {securely}," {declares} Yahweh. "[There are] no gates and [there are] no bars for them, they dwell alone.

The warriors of Babylon have ceased to fight, they remain in the strongholds, their power has dried up, they have become as women. Her dwelling places are set on fire, her bars are broken.