KJV:
Iron sharpeneth iron; so a man sharpeneth the countenance of his friend.
NASB:
Iron sharpens iron, So one man sharpens another.
KJV:
If the iron be blunt, and he do not whet the edge, then must he put to more strength: but wisdom is profitable to direct.
NASB:
If the axe is dull and he does not sharpen its edge, then he must exert more strength. Wisdom has the advantage of giving success.
KJV:
And he shall cut down the thickets of the forest with iron, and Lebanon shall fall by a mighty one.
NASB:
He will cut down the thickets of the forest with an iron axe, And Lebanon will fall by the Mighty One.
KJV:
The smith with the tongs both worketh in the coals, and fashioneth it with hammers, and worketh it with the strength of his arms: yea, he is hungry, and his strength faileth: he drinketh no water, and is faint.
NASB:
The man shapes iron into a cutting tool and does his work over the coals, fashioning it with hammers and working it with his strong arm. He also gets hungry and his strength fails; he drinks no water and becomes weary.
KJV:
I will go before thee, and make the crooked places straight: I will break in pieces the gates of brass, and cut in sunder the bars of iron:
NASB:
"I will go before you and make the rough places smooth; I will shatter the doors of bronze and cut through their iron bars.
KJV:
Because I knew that thou art obstinate, and thy neck is an iron sinew, and thy brow brass;
NASB:
"Because I know that you are obstinate, And your neck is an iron sinew And your forehead bronze,
KJV:
For brass I will bring gold, and for iron I will bring silver, and for wood brass, and for stones iron: I will also make thy officers peace, and thine exactors righteousness.
NASB:
"Instead of bronze I will bring gold, And instead of iron I will bring silver, And instead of wood, bronze, And instead of stones, iron. And I will make peace your administrators And righteousness your overseers.
KJV:
For, behold, I have made thee this day a defenced city, and an iron pillar, and brasen walls against the whole land, against the kings of Judah, against the princes thereof, against the priests thereof, and against the people of the land.
NASB:
"Now behold, I have made you today as a fortified city and as a pillar of iron and as walls of bronze against the whole land, to the kings of Judah, to its princes, to its priests and to the people of the land.