In the first half of this Guide the preaching of Haggai and Zechariah (chs. 1-8) is placed within its historical setting of Persian rule and within the history of prophetism. The latter part of the book explores how the two parts of the book of Zechariah are related, and investigates problems in Zechariah 9-14, with its special importance for the background of the New Testament, and Malachi.