'Fire' in the Bible

So the tongue also is a little member, and boasteth great things. Behold, how much wood is kindled by how small a fire!

And the tongue is a fire: the world of iniquity among our members is the tongue, which defileth the whole body, and setteth on fire the wheel of nature, and is set on fire by hell.

Your gold and your silver are rusted; and their rust shall be for a testimony against you, and shall eat your flesh as fire. Ye have laid up your treasure in the last days.