Proverbs 25:4
Take away the dross from the silver, And there cometh forth a vessel for the refiner:
Proverbs 17:3
The refining pot is for silver, and the furnace for gold; But Jehovah trieth the hearts.
Isaiah 1:25-27
and I will turn my hand upon thee, and thoroughly purge away thy dross, and will take away all thy tin;
2 Timothy 2:20-21
Now in a great house there are not only vessels of gold and of silver, but also of wood and of earth; and some unto honor, and some unto dishonor.
Ezekiel 22:18
Son of man, the house of Israel is become dross unto me: all of them are brass and tin and iron and lead, in the midst of the furnace; they are the dross of silver.
Malachi 3:2-3
But who can abide the day of his coming? and who shall stand when he appeareth? for he is like a refiner's fire, and like fuller's soap:
1 Peter 1:7
that the proof of your faith, being more precious than gold that perisheth though it is proved by fire, may be found unto praise and glory and honor at the revelation of Jesus Christ: