Jeremiah 6:29 in the World English Bible
The bellows blow fiercely. The lead is consumed in the fire. In vain they go on refining, for the wicked are not plucked away.
Context
28 They are all grievous revolters, walking with slanders: they are brass and iron; they are all corrupters.
29 The bellows are burned, the lead is consumed of the fire; the founder melteth in vain: for the wicked are not plucked away.
30 Reprobate silver shall men call them, because the LORD hath rejected them.