Jeremiah 6:28-30
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28They are all grievous rebels, going about with slanders; they are brass and iron: they all of them deal corruptly. 29The bellows blow fiercely; the lead is consumed of the fire: in vain do they go on refining; for the wicked are not plucked away. 30Refuse silver shall men them, because Yahweh has rejected them.
Jeremiah 6:28-30 (WEB)