There was in the days of Herod, the king of Judea, a certain priest named Zacharias, of the priestly division of Abijah. He had a wife of the daughters of Aaron, and her name was Elizabeth.
In the book of Revelation, again, that glorious song that Handel has put to music, "King of Kings and Lord of Lords, forever and ever, hallelujah, hallelujah."So the angel is telling about the eternal reign of Jesus Christ.