'Sparks' in the Bible

For man to misery is born, And the sparks go high to fly.

Out of his mouth do flames go, sparks of fire escape.

As one pretending to be feeble, Who is casting sparks, arrows, and death,

Lo, all ye kindling a fire, girding on sparks, Walk ye in the light of your fire, And in the sparks ye have caused to burn, From my hand hath this been to you, In grief ye lie down!