“ And the LORD appeared unto him, and said, Go not down into Egypt; dwell in the land which I shall tell thee of: As the fining pot for silver, and the furnace for gold; so is a man to his praise. I the LORD search the heart, I try the reins, even to give every man according to his ways, and according to the fruit of his doings. And he shall sit as a refiner and purifer of silver: and he shall purify the sons of Levi, and purge them as gold and silver, that they may offer unto the LORD an offering in righteousness. ”