Like charcoal is to burning coals, and wood to fire, so is a contentious person ¹  to kindle strife. ² 

A blacksmith works with his tool ¹  and forges metal over the coals. He forms it ²  with hammers; he makes it with his strong arm. He gets hungry and loses his energy; ³  he drinks no water and gets tired.

Look, I create the craftsman, who fans the coals into a fire and forges a weapon. ¹  I create the destroyer so he might devastate.