Malachi 3:3; Malachi 4:2

Malachi 3:3

3 He will sit as a refiner and purifier of silver; he will purify the Levites and refine them like gold and silver. Then the LORD will have men who will bring offerings in righteousness,

Malachi 4:2

2 But for you who revere my name, the sun of righteousness will rise with healing in its rays. And you will go out and frolic like well-fed calves.