The answer is: Elijah

Mal 4:5

Malachi is a fascinating book tucked away at the end of the Old Testament. It serves as an important bridge between the old ways of the Israelite faith and the new messages that would herald the coming of the New Testament. Malachi, whose name means "my messenger," is believed to have prophesied in the fifth century BCE, during an era of disillusionment among the people of Israel.

One striking element of Malachi's prophecy is the mention of Elijah. Elijah was a legendary figure renowned for his fervent dedication to God and his dramatic confrontations against idolatry, especially the cult of Baal. Remember the story of how he called down fire from heaven to prove God’s power (1 Kings 18)? Pretty epic, right? Elijah’s impact was so great that ancient Jews expect his return long before the day of the Lord—to restore hearts and reconcile generations (sounds like a heavenly family reunion!).

Interestingly, this anticipation of Elijah’s return transcends denominations and is echoed in the New Testament. When Jesus speaks of John the Baptist in Matthew 11:14, he indicates that John fulfills this role of Elijah, which spirit expands Malachi’s original message into the unfolding narrative of redemption. This brings us full circle: Elijah's return wasn’t just to appear, but to prepare people for something even more impactful—the transformative teachings and life of Jesus. Malachi, as the last of the minor prophets, sets the stage for this powerful narrative shift. Truly, the threads of prophecy weave a rich tapestry of spiritual expectation!