'Furnace' in the Bible

And if the herb of the field, that to-day is, and to-morrow is cast to the furnace, God doth so clothe -- not much more you, O ye of little faith?

and shall cast them to the furnace of the fire; there shall be the weeping and the gnashing of the teeth.

and shall cast them to the furnace of the fire, there shall be the weeping and the gnashing of the teeth.'