'Polished' in the Bible

And their feet were straight feet; and the under sides of their feet were like the feet of oxen; and they were shining like polished brass.

Son of man, say as a prophet, These are the words of the Lord: Say, A sword, a sword which has been made sharp and polished:

It has been made sharp to give death; it is polished so that it may be like a thunder-flame: ...

And I have given it to the polisher so that it may be taken in the hand: he has made the sword sharp, he has had it polished, to put it into the hand of him who gives death.

In order that hearts may become soft, and the number of those who are falling may be increased, I have sent death by the sword against all their doors: you are made like a flame, you are polished for death.

And you, son of man, say as a prophet, This is what the Lord has said about the children of Ammon and about their shame: Say, A sword, even a sword let loose, polished for death, to make it shining so that it may be like a flame:

... for your goods: they gave polished iron and spices for your goods.