THE IMPORTANCE OF ZECHARIAH. Martin Luther called the Old Testament book of Zechariah Ausbund der Propheten, “The quintessence of Old Testament prophecy.” Because this prophecy deals with both the first and second coming of Messiah, it has a privileged spot in the heart and lives of believers. George L. Robinson described the book of Zechariah as: the most Messianic, the most truly apocalyptic and eschatological of all the writings of the Old Testament.