Matthew 3:12

His winnowing-fan is in his hand, and he will clear his threshing-floor, and store his grain in the barn, but the chaff he will burn with inextinguishable fire."

Matthew 8:12

While the heirs to the Kingdom will be 'banished into the darkness' outside; there, there will be weeping and grinding of teeth."

Jude 1:13

They are wild sea waves, foaming with their own shame; they are 'wandering stars,' for which the blackest darkness has been reserved 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
While the heirs to the Kingdom will be 'banished into the darkness' outside; there, there will be weeping and grinding of teeth."
Jude 1:13
They are wild sea waves, foaming with their own shame; they are 'wandering stars,' for which the blackest darkness has been reserved for ever.

A fire

Matthew 3:12
His winnowing-fan is in his hand, and he will clear his threshing-floor, and store his grain in the barn, but the chaff he will burn with inextinguishable fire."