'Furnace' in the Bible

Son of man, the house of Israel is become dross to me: they are all copper, and tin, and iron, and lead, in the midst of the furnace: they are become the dross of silver.

As they gather silver, and copper, and iron, and lead, and tin, into the midst of the furnace, to blow the fire upon it, to melt it, so will I gather you in mine anger and in my fury, and I will lay you on and melt you.

As silver is melted in the midst of the furnace, so shall ye be melted in the midst thereof: and ye shall know that I Jehovah have poured out my fury upon you.