Proverbs 17:3

Search me, O God, and know my heart; Try me and know my anxious thoughts;

The refining pot is for silver and the furnace for gold, And each is tested by the mouth that praises him.

“I, Yahweh, search the heart; I test the inmost being, Even to give to each man according to his ways, According to the fruit of his deeds.

“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.

“And some of those who have insight will fall, in order to refine, purge, and make them pure until the time of the end, because it is still to come at the appointed time.