'Bars' in the Bible

“This is what the Lord said to me: Make chains and yoke bars for yourself and put them on your neck.

Hananiah spoke in the presence of all the people, saying, “Thus says the Lord, ‘Even so within two full years I will break the yoke of Nebuchadnezzar king of Babylon from the neck of all the nations.’” Then the prophet Jeremiah went his way.

Go, and tell Hananiah, saying, Thus saith Jehovah: Thou hast broken the bars of wood; but thou hast made in their stead bars of iron.

Arise, get you up unto the wealthy nation, that dwelleth without care, saith the LORD, which have neither gates nor bars, which dwell alone.

The mighty men of Babylon have forborn to fight, they have remained in their holds: their might hath failed; they became as women: they have burned her dwellingplaces; her bars are broken.