Coal. The first and most frequent use of the word rendered coal is a live ember, burning fuel. Prov. 26:21. In 2 Sam. 22:9, 13, “coals of fire” are put metaphorically for the lightnings proceeding from God. Ps. 18:8, 12, 13; 140:10. In Prov. 26:21, fuel not yet lighted is clearly signified. The fuel meant in the above passage is probably charcoal, and not coal in our sense of the word.