Malachi 2:4; Malachi 2:8; Malachi 3:3

Malachi 2:4

4 "Then you will know that I have sent this commandment to you, that My covenant may continue with Levi," says the LORD of hosts.

Malachi 2:8

8 "But as for you, you have turned aside from the way; you have caused many to stumble by the instruction; you have corrupted the covenant of Levi," says the LORD of hosts.

Malachi 3:3

3 "He will sit as a smelter and purifier of silver, and He will purify the sons of Levi and refine them like gold and silver, so that they may present to the LORD offerings in righteousness.