Jeremiah 6:28-30 English Standard Version (ESV)

28. They are all stubbornly rebellious, going about with slanders;they are bronze and iron;all of them act corruptly.

29. The bellows blow fiercely;the lead is consumed by the fire; in vain the refining goes on,for the wicked are not removed.

30. Rejected silver they are called,for the Lord has rejected them.”

Jeremiah 6