Luke 1:11-18

11Then an angel of the Lord appeared to him, standing at the right side of the altar of incense. 12When Zechariah saw him, he was startled and was gripped with fear. 13But the angel said to him: “Do not be afraid, Zechariah; your prayer has been heard. Your wife Elizabeth will bear you a son, and you are to call him John. 14He will be a joy and delight to you, and many will rejoice because of his birth, 15for he will be great in the sight of the Lord. He is never to take wine or other fermented drink, and he will be filled with the Holy Spirit even before he is born. 16He will bring back many of the people of Israel to the Lord their God.

17And he will go on before the Lord, in the spirit and power of Elijah, to turn the hearts of the parents to their children and the disobedient to the wisdom of the righteous—to make ready a people prepared for the Lord.”

18Zechariah asked the angel, “How can I be sure of this? I am an old man and my wife is well along in years.”