what's the last book of the old testament
Book of Malachi Malachi (or Malachias; Hebrew: מַלְאָכִי‎, Malʾaḫi, Mál'akhî) is the last book of the Neviim contained in the Tanakh, the last of the Twelve Minor Prophets (canonically) and the final book of the Neviim. In the Christian ordering, the grouping of the Prophetic Books is the last section of the Old Testament, making Malachi the last book before the New Testament.