Prometheus Brings Fire by Heinrich Friedrich Füger. Prometheus brings fire to mankind as told by Hesiod, with its having been hidden as revenge for the trick at Mecone.
Source: Wikipedia
In Greek mythology, Prometheus stole Fire from the Gods, and gave it to mankind. For this theft, he was severely punished.
Fire was considered to be among the most precious of gifts.
The ability to Work with Fire, to mold and control it, is therefore a high skill.