Proverbs 25:4
Take away the dross from the silver, and there shall come forth a vessel for the refiner.
Proverbs 17:3
The refining pot is for silver, and the furnace for gold, but Jehovah tries the hearts.
Isaiah 1:25-27
And I will turn back My hand on you, and purge away your dross as with lye, and take away all your alloy.
2 Timothy 2:20-21
But in a great house there are not only vessels of gold and of silver, but also of wood and of earth; and some to honor, and some to dishonor.
Ezekiel 22:18
Son of man, the house of Israel has become dross to Me. All of them are bronze, and tin, and iron, and lead, in the middle of the furnace; they are even the dross of silver.
Malachi 3:2-3
But who can endure the day of His coming? And who shall stand when He appears? For He is like a refiner's fire, and like fuller's soap.
1 Peter 1:7
so that the trial of your faith (being much more precious than that of gold that perishes, but being proven through fire) might be found to praise and honor and glory at the revelation of Jesus Christ,