'Refined' in the Bible

his feet were like glowing bronze refined in a furnace, and his voice was like the sound of raging waters.

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.

I advise you to buy from Me gold refined in the fire so that you may be rich, white clothes so that you may be dressed and your shameful nakedness not be exposed, and ointment to spread on your eyes so that you may see.