For the priest's lips should preserve knowledge, and they should seek the law from his mouth: for he is the messenger of the LORD of hosts.
All Commentaries on Malachi 2:7 Go To Malachi 2
John Chrysostom
AD 407
See the apostle’s wisdom; to obviate the objection that he was prompted by vainglory to applaud his own doctrine, he includes himself also in his anathema. And as they betook themselves to authority, that of James and John, he mentions angels also, saying, “Tell me not of James and John; if one of the most exalted angels of heaven corrupt the gospel, let him be anathema.” The phrase “of heaven” is purposely added, because priests are also called angels. “For the priest’s lips should keep knowledge, and they should seek the law at his mouth, for he is the messenger angel of the Lord of the hosts.”