Jeremiah 6:27-30 - Jeremiah Appointed As An Examiner
27 "I've made you an assayer of my people, as well as a fortress. You know how to test their way." 28 All of them are very rebellious, going around as slanderers. They're bronze and iron, and all of them are corrupt. 29 The bellows blow fiercely to consume the lead with the fire. The assayer keeps on refining, but the impurities aren't separated out. 30 They're called reject silver, because the LORD has rejected them.