Iron sharpens iron; so a man sharpens the countenance of his friend.
Dan also and Greece and Mozel traded in thy fairs bright iron, cassia, and calamus.
2 Samuel 22:35
he who trains my hands for war and causes my arms to break the bow of bronze.
The shield of his valiant ones shall be red, the men of his army are in scarlet, the chariot as fire of torches in the day which shall be made ready; the fir trees shall be terribly shaken.
Is my strength the strength of stones? Or is my flesh of steel?
He shall flee from the weapons of iron, and the bow of bronze shall strike him through.
He trains my hands for the battle, so that a bow of bronze shall be broken by my arms.
Shall iron break the iron from the place of the north wind and the bronze?
The chariots shall rage in the streets; they shall flow through the streets, their faces like torches; they shall run like the lightnings.
And they had breastplates, as it were breastplates of iron; and the sound of their wings was as the sound of chariots of many horses running to battle.
The merchandise of gold and of silver and of precious stones and of pearls and of fine linen and of purple and of silk and of scarlet and of all thyine wood and of all manner vessels of ivory and of all manner vessels of most precious wood and of brass and of iron and of marble