'Cast into the Fire' in the Bible

Let burning coals fall on them; let them be cast into the fire; into deep pits, so that they do not rise up again.

Behold, it is cast into the fire for fuel. The fire devours both its ends, and its middle is charred. Is it fit for any work?

And now also, the axe is laid to the root of the trees. Therefore every tree which does not bring forth good fruit is cut down and cast into the fire.

And now also the axe is laid to the root of the trees. Therefore every tree which does not bring forth good fruit is cut down and cast into the fire.