Sirach 38:28

28 So too is the smith sitting by the anvil,

intent upon his handiwork in iron;

the breath of the fire melts his flesh,

and he wastes away in the heat of the furnace;

he inclines his ear to the sound of the hammer,

and his eyes are on the pattern of the object.

He sets his heart on finishing his handiwork,

and he is careful to complete its decoration.