For the lips of a priest should preserve knowledge, and people should seek instruction from his mouth, because he is the messenger of the LORD of Hosts.
KJV
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.
ASV
For the priest’s lips should keep knowledge, and they should seek the law at his mouth; for he is the messenger of Jehovah of hosts.