Isaiah 1:22
22 Your silver has become ddross,
your best wine mixed with water.
Ezekiel 22:19–20
19 Therefore thus says the Lord God: Because you have all become dross, therefore, behold, I will gather you into the midst of Jerusalem. 20 As one gathers silver and bronze and iron and lead and tin into a furnace, to blow the fire on it in order to melt it, so I will gather you in my anger and in my wrath, and I will put you in and melt you.