'Furnace' in the Bible

“Son of man, the house of Israel has become dross to Me; all of them are bronze and tin and iron and lead in the furnace; they are the dross of silver.

As they gather silver and bronze and iron and lead and tin into the furnace to blow fire on it in order to melt it, so I will gather you in My anger and in My wrath and I will lay you there and melt you.

As silver is melted in the furnace, so you will be melted in the midst of it; and you will know that I, the Lord, have poured out My wrath on you.’”