Malachi is the last book of the Old Testament and belongs to the period of Nehemiah. The prophets message is to the priests and the people, charging them with indifference, doubt, and immorality. Malachi tells of the coming day of the Lord and closes the book with a prophecy of John the Baptist.

Malachi 4

4:2 But unto you that fear my name shall the Sun of righteousness arise with healing in his wings; and ye shall go forth, and grow up as calves of the stall.