'Furnace' in the Bible

And shall cast them into a furnace of fire: there shall be wailing and gnashing of teeth.

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

And his feet like unto fine brass, as if they burned in a furnace; and his voice as the sound of many waters.

And he opened the bottomless pit; and there arose 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.