As the temple was being built, only stones shaped at the quarry were used; the sound of hammers, pickaxes, or any other iron tool was not heard at the temple while it was being built.

After all, they are your people and your special possession whom you brought out of Egypt, from the middle of the iron-smelting furnace.

Zedekiah son of Kenaanah made iron horns and said, "This is what the Lord says, 'With these you will gore Syria until they are destroyed.'"