Jeremiah 6:27-30
27“I have amade you a tester of metals and 1an assayer among My people,That you may know and test their way.”28All of them are rebelliously stubborn,aGoing about as a slanderer.They are bbronze and iron;They, all of them, are corrupt.29The bellows blow fiercely;The lead 1is consumed by the fire;In vain the refining goes on,But the aevil ones are not 2separated.30aThey call them rejected silverBecause bYahweh has rejected them.