Strong H6884 צָרַף tsâraph · to refine

Isaiah

1. Isaiah 1:25
   And I will turn my hand upon thee, and purely purge away thy dross, and take away all thy tin:
2. Isaiah 40:19
   The workman melteth a graven image, and the goldsmith spreadeth it over with gold, and casteth silver chains.
3. Isaiah 41:7
   So the carpenter encouraged the goldsmith, and he that smootheth with the hammer him that smote the anvil, saying, It is ready for the sodering: and he fastened it with nails, that it should not be moved.
4. Isaiah 46:6
   They lavish gold out of the bag, and weigh silver in the balance, and hire a goldsmith; and he maketh it a god: they fall down, yea, they worship.
5. Isaiah 48:10
   Behold, I have refined thee, but not with silver; I have chosen thee in the furnace of affliction.