'Coal' in the Bible

Now behold, the whole family has risen against your maidservant, and they say, ‘Hand over the one who struck his brother, that we may put him to death for the life of his brother whom he killed, and destroy the heir also.’ Thus they will extinguish my coal which is left, so as to leave my husband neither name nor remnant on the face of the earth.”

Then one of the seraphim flew to me with a burning coal in his hand, which he had taken from the altar with tongs.

“Behold, they have become like stubble,Fire burns them;They cannot deliver themselves from the power of the flame;There will be no coal to warm byNor a fire to sit before!