OLD Sing, Sing, Sing!
Introduction
The latter part, which is called the Benedictus because in Latin Vulgate the hymn begins in 1:68 with the word “Benedictus” (like the Magnificat), is heavily dependent on the OT both for its terminology and content and can be divided into four parts
The latter part, which is called the Benedictus because in Latin Vulgate the hymn begins in 1:68 with the word “Benedictus” (like the Magnificat), is heavily dependent on the OT both for its terminology and content and can be divided into four parts: 1:67 (the narrative introduction); 1:68a (the opening statement of praise); 1:68b–79 (the hymn itself, which can be subdivided into 1:68b–75, 76–79); and 1:80 (the narrative conclusion)
Luke wanted his readers to understand this as Zechariah’s divinely inspired hymn praising God for fulfilling his promises to his people and describing the roles of John the Baptist and especially the Messiah.