'Iron' in the Bible

Thou dost rule them with a sceptre of iron, As a vessel of a potter Thou dost crush them.'

They have afflicted with fetters his feet, Iron hath entered his soul,

Inhabitants of dark places and death-shade, Prisoners of affliction and of iron,

For He hath broken doors of brass, And bars of iron He hath cut.

To bind their kings with chains, And their honoured ones with fetters of iron,