Dross: Figurative
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Psalm 119:119
All the wicked on earth You discard like dross; therefore I love Your testimonies.
Proverbs 25:4
Remove the dross from the silver, and a vessel for a silversmith will come forth.
Proverbs 26:23
Like glaze covering an earthen vessel are burning lips and a wicked heart.
Isaiah 1:22
Your silver has become dross; your fine wine is diluted with water.
Ezekiel 22:18, 19
“Son of man, the house of Israel has become dross to Me. All of them are copper, tin, iron, and lead inside the furnace; they are but the dross of silver. / Therefore this is what the Lord GOD says: ‘Because all of you have become dross, behold, I will gather you into Jerusalem.