The book begins with an oracle, a word from the Lord to Israel through Malachi, whose name means my messenger. The Lord tells his people: I have loved you. They ask how that love has been shown. God answers by comparing Jacob and Esau, brothers from one family: he loved Jacob and not Esau. Edom, the land of Esau's descendants, was laid waste, and even if it tries to rebuild, the Lord will tear it down again. When Israel sees it with its own eyes, it will say that the Lord is great even beyond its borders (vv. 1-5).
Then the Lord turns to the priests. A son honors his father and a servant his master; if God is Father and Lord, where are the honor and respect? The priests ask how they have despised his name. God answers that they offer defiled food on his altar and treat his table as contemptible. They bring blind, lame and sick animals, something they would never dare offer to their governor (vv. 6-8).
God would rather have someone shut the temple doors than continue this empty worship, and he declares that he takes no pleasure in them and will not accept their offerings. By contrast, his name is great among the nations, and in every place incense and a pure offering are brought to him. The priests, however, profane it, call the service a burden and sneer at it. The chapter ends with a curse on the cheat who vows a male from his flock but sacrifices a blemished animal: the Lord is a great King, and his name is feared among the nations (vv. 9-14).