'Refined' in the Bible

and his feet like unto burnished brass, as if it had been refined in a furnace; and his voice as the voice of many waters.

I counsel thee to buy of me gold refined by fire, that thou mayest become rich; and white garments, that thou mayest clothe thyself, and that the shame of thy nakedness be not made manifest; and eyesalve to anoint thine eyes, that thou mayest see.