'Iron' in the Bible

Send me now therefore a man cunning to work in gold, and in silver, and in brass, and in iron, and in purple, and crimson, and blue, and that can skill to grave with the cunning men that are with me in Judah and in Jerusalem, whom David my father did provide.

The son of a woman of the daughters of Dan, and his father was a man of Tyre, skilful to work in gold, and in silver, in brass, in iron, in stone, and in timber, in purple, in blue, and in fine linen, and in crimson; also to grave any manner of graving, and to find out every device which shall be put to him, with thy cunning men, and with the cunning men of my lord David thy father.

And Zedekiah the son of Chenaanah had made him horns of iron, and said, Thus saith the LORD, With these thou shalt push Syria until they be consumed.

And the king and Jehoiada gave it to such as did the work of the service of the house of the LORD, and hired masons and carpenters to repair the house of the LORD, and also such as wrought iron and brass to mend the house of the LORD.