'Coal' in the Bible

Now the entire family has risen up against your servant, saying, 'Turn over the one who struck down his brother, so that we can execute him and avenge the death of his brother whom he killed. In so doing we will also destroy the heir.' They want to extinguish my remaining coal, leaving no one on the face of the earth to carry on the name of my husband."

But then one of the seraphs flew toward me. In his hand was a hot coal he had taken from the altar with tongs.

He touched my mouth with it and said, "Look, this coal has touched your lips. Your evil is removed; your sin is forgiven."

It shatters in pieces like a clay jar, so shattered to bits that none of it can be salvaged. Among its fragments one cannot find a shard large enough to scoop a hot coal from a fire or to skim off water from a cistern."