Jeremiah 6:27-29

Darby Translation

²⁷ I have set thee among my people as an assayer, a fortress, that thou mayest know and try their way.

²⁸ They are all the most rebellious of rebels, going about with slander: they are bronze and iron; they are all corrupters.

²⁹ The bellows are burned, the lead is consumed by the fire; they have melted, and melted in vain; and the bad are not plucked away.