Therefore thus saith the LORD, If thou return, then will I bring thee again, that thou mayest stand before me; and if thou take forth the precious from the vile, thou shalt be as my mouth: they shall return unto thee, but thou shalt not return unto them.
and he shall sit as a refiner and purifier of silver, and he shall purify the sons of Levi, and purge them as gold and silver; and they shall offer unto the LORD offerings in righteousness.
Faithful is the saying, and concerning these things I will that thou affirm confidently, to the end that they which have believed God may be careful to maintain good works. These things are good and profitable unto men:
that the proof of your faith, being more precious than gold that perisheth though it is proved by fire, might be found unto praise and glory and honour at the revelation of Jesus Christ: