Ezekiel 22:18-20

18“Son of man, the house of Israel has become dross to Me—all of them are the copper, tin, iron and lead left inside a furnace—they are the dross of silver.”

19Therefore, thus says Adonai Elohim: “Because you have all become dross, therefore behold, I will gather you into Jerusalem.

20As one gathers silver, copper, iron, lead and tin into the furnace, to blow the fire upon it, to melt it; so I will gather you in My anger and in My fury. I will put you in and melt you.