Malachi 3:1-4

1 Look, I am sending my messenger who will clear the path before me; suddenly the LORD whom you are seeking will come to his temple. The messenger of the covenant in whom you take delight is coming, says the LORD of heavenly forces.
2 Who can endure the day of his coming? Who can withstand his appearance? He is like the refiner's fire or the cleaner's soap.
3 He will sit as a refiner and a purifier of silver. He will purify the Levites and refine them like gold and silver. They will belong to the LORD, presenting a righteous offering.
4 The offering of Judah and Jerusalem will be pleasing to the LORD as in ancient days and in former years.