Malachi 3:1-4

1 'Look, I shall send my messenger to clear a way before me. And suddenly the Lord whom you seek will come to his Temple; yes, the angel of the covenant, for whom you long, is on his way, says Yahweh Sabaoth.

2 Who will be able to resist the day of his coming? Who will remain standing when he appears? For he will be like a refiner's fire, like fullers' alkali.

3 He will take his seat as refiner and purifier; he will purify the sons of Levi and refine them like gold and silver, so that they can make the offering to Yahweh with uprightness.

4 The offering of Judah and Jerusalem will then be acceptable to Yahweh as in former days, as in the years of old.