https://www.biblegateway.com/passage/?search=MALACHI%203%3A2-3&version=KJV
I got this from the above weblink:
Malachi 3:2-3
King James Version
2 But who may abide the day of his coming? and who shall stand when he appeareth? for he is like a refiner's fire, and like fullers' soap:
3 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, that they may offer unto the Lord an offering in righteousness.