Matthew 3:12

His winnowingshovel is in his hand, and he will thoroughly cleanse his threshingfloor, and gather his wheat into the garner; but the chaff he will burn up with unquenchable fire.

Matthew 8:12

But the sons of the kingdom will go out into the outer darkness; there will be wailing and gnashing of teeth.

Jude 1:13

raging waves of the sea, foaming out their own shame; wandering stars, for whom is reserved the blackness of darkness for ever.

Treasury of Scripture Knowledge

Summary

All darkness shall be hid in his secret places: a fire not blown shall consume him; it shall go ill with him that is left in his tabernacle.

A fire

Bible References

Darkness

Matthew 8:12
But the sons of the kingdom will go out into the outer darkness; there will be wailing and gnashing of teeth.
Jude 1:13
raging waves of the sea, foaming out their own shame; wandering stars, for whom is reserved the blackness of darkness for ever.

A fire

Matthew 3:12
His winnowingshovel is in his hand, and he will thoroughly cleanse his threshingfloor, and gather his wheat into the garner; but the chaff he will burn up with unquenchable fire.