SIR 38:28

28 So is the smith sitting by the anvil, And considering the unwrought iron: The vapour of the fire will waste his flesh; And in the heat of the furnace will he wrestle [with his work: ] The noise of the hammer will be ever in his ear, And his eyes are upon the pattern of the vessel; He will set his heart upon perfecting his works, And he will be wakeful to adorn them perfectly.