During the time when Herod was king of Judea, there was a priest called Zechariah, who came from the Abijah priestly division. He was married to Elizabeth, who was also descended from Aaron the priest.
This was the order in which each group were to serve when they came into the house of the Lord, following the procedure defined for them by their forefather Aaron, as instructed by the Lord, the God of Israel.
But the angel told him, “Don't be afraid, Zechariah. Your prayer has been heard, and your wife Elizabeth will bear you a son, and you shall call him John.