'Furnace' in the Bible

But if God so clothes the grass of the field, which is alive today and tomorrow is thrown into the furnace, will He not much more clothe you? You of little faith!

and will throw them into the furnace of fire; in that place there will be weeping and gnashing of teeth.

and will throw them into the furnace of fire; in that place there will be weeping and gnashing of teeth.