Simplify the following text for a Grade 4 native English-speaking person.
Original: Primarily because of its messianic promise , the book of Malachi is frequently referred to in the Christian New Testament . What follows is a brief comparison between the book of Malachi and the New Testament texts which refer to it ( as suggested in Hill 84-88 ) .
Simplified: The Book of Malachi , is the last of the books of the Old Testament .