'Iron' in the Bible

He also brought out the people who were in it, and set them under saws, sharp iron instruments, and iron axes, and made them pass through the brickkiln. And thus he did to all the cities of the sons of Ammon. Then David and all the people returned to Jerusalem.

But the man who touches themMust be armed with iron and the shaft of a spear,And they will be completely burned with fire in their place.”