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. 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. 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. The offering of Judah and Jerusalem will be pleasing to the Lord as in ancient days and in former years.

Malachi 3:1-4 (CEB)