Furnace: Use of for Refining Silver
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Ezekiel 22:22
As silver is melted in a furnace, so you will be melted within the city. Then you will know that I, the LORD, have poured out My wrath upon you.’”
Malachi 3:3
And He will sit as a refiner and purifier of silver; He will purify the sons of Levi and refine them like gold and silver. Then they will present offerings to the LORD in righteousness.