The bellows blow fiercely to burn away the lead with fire, but the refining goes on in vain; the wicked are not purged out.
NMVThe bellows are burned, the lead is consumed of the fire; the founder melts in vain: for the wicked are not plucked away.
OJBThe bellows blow, the oferet (lead) is consumed by the eish; the smelterʼs refining is in vain; for the ra'im are not drawn off.
T4TA metalworker causes the bellows to blow very hard to make the fire very hot to completely burn up the impurities [MET]. But just as a fire does not cause all the waste material to run off, it is impossible to separate the righteous people from the wicked people, and punish only the wicked people.