'Iron' in the Bible

He also brought out the people who were there, and put them to [work with] the saws and sharp iron instruments and iron axes, and made them work at the brickkiln. And he did this to all the Ammonite cities. Then David and all the men returned to Jerusalem.

“But the man who touches themMust be armed with iron and the shaft of a spear,And they are utterly burned and consumed by fire in their place.”