Proverbs 25:4
Take the dross from the silver, and there shall be a clean vessel thereof.
Proverbs 17:3
Like as silver is tried in the fire and gold in the furnace, even so doth the LORD prove the hearts.
Isaiah 1:25-27
And therefore shall I lay my hand upon thee, and burn out thy dross from the finest and purest, and put out all thy lead,
2 Timothy 2:20-21
Notwithstanding, in a great house are not only vessels of gold and of silver: but also of wood and of earth: Some for honour, and some unto dishonour.
Ezekiel 22:18
"Thou son of man, the house of Israel is turned to dross. All they that should be brass, tin, iron and lead, are in the fire become dross.
Malachi 3:2-3
Who shall endure in the day of his coming, or who shall stand to behold him? For he is as trying fire, and as the herb that fullers scour withal.
1 Peter 1:7
that your faith, once tried, being much more precious than gold that perisheth, though it be tried with fire, might be found unto laud, glory, and honour, at the appearing of Jesus Christ: