Malachi 3:1-4

The LORD All-Powerful says, “I will send my messenger, who will prepare the way for me. Suddenly, the Lord you are looking for will come to his Temple; the messenger of the agreement, whom you want, will come.” No one can live through that time; no one can survive when he comes. He will be like a purifying fire and like laundry soap. Like someone who heats and purifies silver, he will purify the Levites and make them pure like gold and silver. Then they will bring offerings to the LORD in the right way. And the LORD will accept the offerings from Judah and Jerusalem, as it was in the past.