'Sharpened' in the Bible

If I have sharpened the brightness of My sword, And My hand doth lay hold on judgment, I turn back vengeance to Mine adversaries, And to those hating Me -- I repay!

Who sharpened as a sword their tongue, They directed their arrow -- a bitter word.

They sharpened their tongue as a serpent, Poison of an adder is under their lips. Selah.

Iron by iron is sharpened, And a man sharpens the face of his friend.

If the iron hath been blunt, And he the face hath not sharpened, Then doth he increase strength, And wisdom is advantageous to make right.

'Son of man, prophesy, and thou hast said, Thus said Jehovah, say: A sword, a sword is sharpened, and also polished.

So as to slaughter a slaughter it is sharpened. So as to have brightness it is polished, Desire hath rejoiced the sceptre of my son, It is despising every tree.

And he giveth it for polishing, For laying hold of by the hand. It is sharpened -- the sword -- and polished, To give it into the hand of a slayer.