After brief discussion on the literary form and message of Malachi James Fischer summarizes Malachi in this way. "Or to put it in simpler words, the message of the prophet was to tell who Yahweh was. The message was not from men to God (“We are, sorry”); it was from God to man. And it said Yahweh is father, lover, a God who is faithful because that is the kind of God he is and who wants most of all that men be faithful to him."
James A. Fischer, “Notes on the Literary Form and Message of Malachi,” Catholic Bible Quarterly 34 (1972): 320.