Proverbs 26:23 Like an earthen vessel overlaid with silver dross Are burning lips and a wicked heart.

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 furnace; they are the dross of silver.

Malachi 3:2 "But who can endure the day of His coming? And who can stand when He appears? For He is like a refiner's fire and like fullers' soap.

Malachi 3:3 "He will sit as a smelter and purifier of silver, and He will purify the sons of Levi and refine them like gold and silver, so that they may present to the LORD offerings in righteousness. (NASB ©1995)