Malachi 2:2-4

Amplified Bible

² If you do not listen, and if you do not take it to heart to honor My name,” says the Lord of hosts, “then I will send the curse upon you and I will curse your blessings [on the people]. Indeed, I have cursed them already, because you are not taking it to heart. ³ Behold, I am going to rebuke your seed, and I will spread the refuse on your faces, the refuse from the festival offerings; and you will be taken away with it [in disgrace]. ⁴ Then you will know [without any doubt] that I have sent this [new] commandment to you (priests), that My covenant may continue with Levi [the priestly tribe],” says the Lord of hosts.