Malachi in Wikipedia

Malachi, Malachias or Mal'achi (Hebrew: מַלְאָכִי, Modern Mal'akhi Tiberian Malʼāḵî ; "My Messenger", see malakh) was a Jewish prophet in the Hebrew Bible. He was the last of the minor prophets of David, and the writer of the Book of Malachi, the last book of the Christian edition Old Testament canon (Book of Malachi 4:4-6 ), and is the last book of the Neviim (prophets) section in the Jewish Tanakh. No allusion is made to him by Ezra, however, and he does not directly mention the restoration of the temple. The editors of the 1906 Jewish Encyclopedia implied that he prophesied after Haggai and Zechariah (Malachi 1:10 ; 3:1 , 3:10 ) and speculated that he delivered his prophecies about 420 BC, after the second return of Nehemiah from Persia (Book of Nehemiah13:6 ), or possibly before his return, comparing Malachi 2:8 with Nehemiah 13:15 ; Malachi 2:10-16 with Nehemiah 13:23 )...