Iron sharpens iron; so a man sharpens his friend's countenance.
Vedan and Javan traded with yarn for your wares: bright iron, cassia, and calamus, were among your merchandise.
2 Samuel 22:35
He teaches my hands to war, so that my arms bend a bow of brass.
The shield of his mighty men is made red. The valiant men are in scarlet. The chariots flash with steel in the day of his preparation, and the pine spears are brandished.
Is my strength the strength of stones? Or is my flesh of brass?
He shall flee from the iron weapon. The bronze arrow shall strike him through.
He teaches my hands to war, so that my arms bend a bow of bronze.
Can one break iron, even iron from the north, and brass?
The chariots rage in the streets. They rush back and forth in the broad ways. Their appearance is like torches. They run like the lightnings.
They had breastplates, like breastplates of iron. The sound of their wings was like the sound of chariots, or of many horses rushing to war.
merchandise of gold, silver, precious stones, pearls, fine linen, purple, silk, scarlet, all expensive wood, every vessel of ivory, every vessel made of most precious wood, and of brass, and iron, and marble;