Malachi 2:5

2 If you will not give ear and take it to heart, to give glory to my name, says the Lord of armies, then I will send the curse on you and will put a curse on your blessing: truly, even now I have put a curse on it, because you do not take it to heart.

3 See, I will have your arm cut off, and will put waste on your faces, even the waste from your feasts; and you will be taken away with it.

4 And you will be certain that I have sent this order to you, so that it might be my agreement with Levi, says the Lord of armies.

5 My agreement with him was on my side life and peace, and I gave them to him; on his side fear, and he had fear of me and gave honour to my name.

6 True teaching was in his mouth, and no evil was seen on his lips: he was walking with me in peace and righteousness, turning numbers of people away from evil-doing.

7 For it is right for the priest's lips to keep knowledge, and for men to be waiting for the law from his mouth: for he is the servant sent from the Lord of armies.

8 But you are turned out of the way; you have made the law hard for numbers of people; you have made the agreement of Levi of no value, says the Lord of armies.