International Standard Version The bellows blow fiercely to consume the lead with the fire. The assayer keeps on refining, but the impurities aren't separated out.
American Standard Version The bellows blow fiercely; the lead is consumed of the fire: in vain do they go on refining; for the wicked are not plucked away.
Young's Literal Translation The bellows have been burnt, By fire hath the lead been consumed, In vain hath a refiner refined, And the wicked have not been drawn away.