Take away the dross from the silver, and there shall come forth a vessel for the finer.
ZEFANIABIBLE_BIBLE_BOOK_NAME_20 17:3
A crucible is for silver and a smelter for gold, but the LORD is a tester of hearts.
ZEFANIABIBLE_BIBLE_BOOK_NAME_23 1:25-27
25
I will turn My hand against you and will burn away your dross completely; I will remove all your impurities.
26
I will restore your judges to what they once were, and your advisers to their former state. Afterwards you will be called the Righteous City, a Faithful City."
27
Zion will be redeemed by justice, her repentant ones by righteousness.
ZEFANIABIBLE_BIBLE_BOOK_NAME_39 3:3
He will be like a refiner and purifier of silver; He will purify the sons of Levi and refine them like gold and silver. Then they will present offerings to the LORD in righteousness.
ZEFANIABIBLE_BIBLE_BOOK_NAME_55 2:20
Now in a large house there are not only gold and silver bowls, but also those of wood and earthenware, some for special use, some for ordinary.
ZEFANIABIBLE_BIBLE_BOOK_NAME_55 2:21
So if anyone purifies himself from these things, he will be a special instrument, set apart, useful to the Master, prepared for every good work.
ZEFANIABIBLE_BIBLE_BOOK_NAME_60 1:7
so that the genuineness of your faith-- more valuable than gold, which perishes though refined by fire-- may result in praise, glory, and honor at the revelation of Jesus Christ.