What is the book of Malachi about?
Malachi is the OT’s last book — a series of disputes between the Lord and his people about sloppy worship, broken marriages, and unjust priests, ending with the promise of a coming messenger. Then 400 years of silence — until John the Baptist appears.
Malachi is a "doom and hope" book. God complains because he is still in covenant: he confronts because he still cares.
The closing promise — "Behold, I send my messenger… he will prepare the way" (Malachi 3:1) — points directly to John the Baptist and the coming of Christ.
Malachi reminds us how the OT actually ends: with God still speaking, his people still failing, and a forerunner on the horizon. The next voice we hear is the wilderness cry of John.
Original BibleDawn answer · reviewed 2026-06. Drafted with AI assistance and reviewed for accuracy.