Malachi 2:3

1 And now, O ye priests, this commandment is for you.

2 If ye will not hear, and if ye will not lay it to heart, to give glory unto my name, saith the LORD of hosts, I will even send a curse upon you, and I will curse your blessings: yea, I have cursed them already, because ye do not lay it to heart.

3 Behold, I will corrupt your seed, and spread dung upon your faces, even the dung of your solemn feasts; and one shall take you away with it.

4 And ye shall know that I have sent this commandment unto you, that my covenant might be with Levi, saith the LORD of hosts.

5 My covenant was with him of life and peace; and I gave them to him for the fear wherewith he feared me, and was afraid before my name.

6 The law of truth was in his mouth, and iniquity was not found in his lips: he walked with me in peace and equity, and did turn many away from iniquity.

7 For the priest's lips should keep knowledge, and they should seek the law at his mouth: for he is the messenger of the LORD of hosts.