Jeremiah 6:27-30 - Jeremiah Appointed As An Examiner
27 I have set thee for a tower and a fortress among my people, that thou mayest know and try their way. 28 They are all grievous revolters, walking with slanders: they are brass and iron; they are all corrupters. 29 The bellows is burned, the lead is consumed by 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.