Author: Malachi (whose name translates to "My Messenger"). Very little is known about him personally outside of this book.
Date: Approximately 450–430 BC. Malachi prophesied during the post-exilic period, roughly contemporary with Nehemiah. The temple had been rebuilt, but the initial spiritual zeal of the returning exiles had faded into apathy and cynicism.
Basic Overview: As the final book of the Old Testament, Malachi is structured around a series of six disputes or dialogues between God and the people of Israel. God brings an accusation (such as offering blemished sacrifices, tolerating divorce, or withholding tithes), the people cynically question the charge ("How have we shown contempt for your name?"), and God responds with a rebuke and a warning of impending judgment. The book serves as a final call to covenant faithfulness before a 400-year prophetic silence leading up to the New Testament.
Malachi contains several critical prophecies concerning the coming of the Messiah and His forerunner:
The Messenger of the Covenant (Malachi 3:1): "I will send my messenger, who will prepare the way before me. Then suddenly the Lord you are seeking will come to his temple; the messenger of the covenant, whom you desire, will come." This predicts both the forerunner and the sudden arrival of Christ.
The Refiner's Fire (Malachi 3:2-3): The Messiah’s arrival is described as a purifying event, coming like a "refiner's fire or a launderer's soap" to purify the priesthood and the people.
The Sun of Righteousness (Malachi 4:2): "But for you who revere my name, the sun of righteousness will rise with healing in its rays."
Malachi concludes with a famous promise regarding Elijah: "See, I will send the prophet Elijah to you before that great and dreadful day of the Lord comes. He will turn the hearts of the parents to their children, and the hearts of the children to their parents..." (Malachi 4:5-6).
The concept of Elijah's ministry continuing beyond his earthly life is rooted in 2 Kings 2. When Elijah was taken up to heaven in a whirlwind, his mantle (cloak) fell to his successor, Elisha, who had asked for a "double portion" of Elijah's spirit. Elisha striking the Jordan River with the mantle demonstrated that the authority and power of Elijah's prophetic office had transferred to him. This established a biblical precedent for someone ministering in the "spirit and power of Elijah" without being a reincarnated Elijah.
The New Testament explicitly links Malachi’s prophecy to John the Baptist.
The angel Gabriel told Zechariah that John would minister "in the spirit and power of Elijah" (Luke 1:17).
Jesus explicitly identified John as the fulfillment of Malachi’s prophecy: "And if you are willing to accept it, he is the Elijah who was to come" (Matthew 11:14).
Despite Jesus' clear identification of John as Elijah, a theological tension remains regarding the complete fulfillment of Malachi 4:5-6.
In Matthew 17:11-12, after the Transfiguration (where the literal Elijah appeared), Jesus stated: "Elijah truly shall first come, and restore all things. But I say unto you, That Elias [Elijah] is come already..."
This wording indicates a complex, potentially dual fulfillment:
Inaugural Fulfillment: John the Baptist served as the Elijah-figure for Christ's first coming. However, John's ministry did not definitively "restore all things," nor did it fully "turn the hearts of the fathers to the children, and the children to their fathers" on a national or global scale, unless interpreted in a broad, spiritualized sense of calling a remnant to repentance.
Future Fulfillment: Because the total reconciliation of families and the restoration of all things did not occur, and because Malachi ties Elijah's coming to the "great and dreadful day of the Lord" (often associated with the end times and final judgment), Christ's words ("Elijah truly shall first come") strongly suggest a future fulfillment before His Second Coming. Many theologians tie this future Elijah-like ministry to the two witnesses described in Revelation 11, who possess powers mirroring those of Moses and Elijah.