Isaiah 44:12; Isaiah 54:16

12 The man shapes iron into a cutting tool and does his work over the coals, fashioning it with hammers and working it with his strong arm. He also gets hungry and his strength fails; he drinks no water and becomes weary.

16 "Behold, I Myself have created the smith who blows the fire of coals And brings out a weapon for its work; And I have created the destroyer to ruin.