'Fire brands' in the Bible

Like a madman who throwsFirebrands, arrows, and death,

and say to him, ‘Take care and be calm, do not fear and be weak-hearted because of these two stumps of smoldering logs, on account of the fierce anger of [King] Rezin and Aram and of the son of Remaliah (Pekah, usurper of the throne of Israel).

Listen carefully, all you who kindle your own fire [devising your own man-made plan of salvation],Who surround yourselves with torches,Walk by the light of your [self-made] fireAnd among the torches that you have set ablaze.But this you will have from My hand:You will lie down in [a place of] torment.