The Book of Haggai is named after its presumed author , the prophet Haggai .
The Book of Haggai is a book of the Tanakh -LRB- Hebrew Bible -RRB- and of the Old Testament , written by the prophet Haggai .
The Book of Haggai is a book of the Tanakh -LRB- Hebrew Bible -RRB- and of the Old Testament , written by the prophet Haggai .
Write a simpler version for the sentence: The Book of Haggai is named after its presumed author , the prophet Haggai . Output: