Malachi 2:4-7

4Then you will know that I have sent this command to you, to be My covenant with Levi,” says Adonai-Tzva’ot.

5“My covenant was with him for life and shalom, and I gave them to him for reverence. So he revered Me, and he was awestruck by My Name.

6Instruction of truth was in his mouth. Injustice was not found on his lips. In shalom and uprightness he walked with Me, and he turned many from iniquity.

7For a kohen’s lips should guard knowledge, and instruction must be sought from his mouth. For he is a messenger of Adonai-Tzva’ot.