Malachi 2:1-4

“And now, this commandment is for you, the priests.

If you do not listen, and if you do not take it to heart to give honor to My name,” says the Lord of armies, “then I will send the curse upon you and I will curse your blessings; and indeed, I have cursed them already, because you are not taking it to heart.

Behold, I am going to rebuke your descendants, and I will spread dung on your faces, the dung of your feasts; and you will be taken away with it.

Then you will know that I have sent this commandment to you, so that My covenant may continue with Levi,” says the Lord of armies.