'Fiery' in the Bible

On the day that the tabernacle was set up, the cloud covered the tabernacle -- the tent of the testimony -- and from evening until morning there was a fiery appearance over the tabernacle.

This is the way it used to be continually: The cloud would cover it by day, and there was a fiery appearance by night.

And the LORD sent fiery serpents among the people, and they bit the people; and much people of Israel died.

And the LORD said unto Moses, Make thee a fiery serpent, and set it upon a pole: and it shall come to pass, that every one that is bitten, when he looketh upon it, shall live.