Malachi 2:1

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

This commandment is from the Lord and is directed expressly to the priests. As set forth in the verses that follow, it requires them to hear, to take His words to heart, and to give glory to His name. It is therefore a call to heedful, wholehearted obedience.

Failure to obey brings a curse upon the priests themselves and upon their blessings. The command is given in connection with God's covenant with Levi, that the covenant might continue. It embraces the priests' duty to preserve knowledge, to teach God's law, and to turn people from iniquity.