'Coals' in the Bible

The blacksmith takes an axe, works in the coals, fashions it with hammers, and works it with his strong arm. He is hungry, and his strength fails; he drinks no water, and is faint.

No one thinks, neither is there knowledge nor understanding to say, "I have burned part of it in the fire. Yes, I have also baked bread on its coals. I have roasted meat and eaten it. Shall I make the rest of it into an abomination? Shall I bow down to a tree trunk?"

"Behold, I have created the smith who blows the fire of coals, and brings forth a weapon for his work; and I have created the waster to destroy.