What does Luke 1:67 mean?

John the Baptist (Luke 3:2–3) is the child of an elderly couple (Luke 1:5–7). These two were given a miraculous promise of a son (Luke 1:13), which came true (Luke 1:57–58). The combination of these supernatural events made a deep impression on those living in the region around Jerusalem (Luke 1:65). The fact that John quickly attracts many people to hear his early preaching (Matthew 3:5) might be influenced by this early reputation (Luke 1:66).

At some point after John's birth, his father, Zechariah, will declare a prophecy (Luke 1:68–79). This will combine references to the Old Testament with a celebration of how the Messiah will accomplish salvation. As with many psalms and prophecies, this will apply a present-tense view of God's work. Since the Lord's promises are guaranteed, that which He says is "as good as done." Zechariah's praise will declare things God has "done," in faithful anticipation that they are about to be fulfilled.