Malachi 3:2-5

2“But who can endure the day of His coming? And who can stand when He appears? For He is like a refiner’s fire and like launderer’s soap [which removes impurities and uncleanness].

3He will sit as a refiner and purifier of silver, and He will purify the sons of Levi [the priests], and refine them like gold and silver, so that they may present to the Lord [grain] offerings in righteousness.

4Then the offering of Judah and Jerusalem will be pleasing to the Lord as in the days of old and as in ancient years.

5“Then I will come near you for judgment; I will be a swift witness against sorcerers, against adulterers, against perjurers, and against those who oppress the laborer in his wages and widows and the fatherless, and against those who turn away the alien [from his right], and those who do not fear Me [with awe-filled reverence],” says the Lord of hosts.