Old TestamentJeremiahJeremiah’s Useless Labor · 6:27–306:27 I have set thee for a tower and a fortress among my people, that thou mayest know and try their way.6:28 They are all grievous revolters, walking with slanders: they are brass and iron; they are all corrupters.6:29 The bellows are burned, the lead is consumed of the fire; the founder melteth in vain: for the wicked are not plucked away.6:30 Reprobate silver shall men call them, because the LORD hath rejected them.