'Furnace' in the Bible

and shall cast them into the furnace of fire: there shall be the weeping and the gnashing of teeth.

and shall cast them into the furnace of fire: there shall be the weeping and the gnashing of teeth.

and his feet like unto burnished brass, as if it had been refined in a furnace; and his voice as the voice of many waters.

And he opened the pit of the abyss; and there went up a smoke out of the pit, as the smoke of a great furnace; and the sun and the air were darkened by reason of the smoke of the pit.