Lucas 1

11 Then an angel of the Lord appeared to him, standing at the right side of the altar of incense; 12 and upon seeing him Zacharias was shaken, and a fear fell upon him.

Gabriel delivers

13 But the angel said to him: "Do not be afraid, Zacharias, because your prayer was heard,*Given his expression of doubt this evidently was not a recent prayer. Zacharias had given up hope (since having a child was now a physical impossibility), and may well have been unhappy with God for not having answered. He was not even impressed with the tremendous things the angel said, but continued to doubt. and your wife Elizabeth will bear you a son, and you shall call his name John. 14 And you will have joy and exultation, and many will rejoice over his birth. 15 For he will be great in the sight of the Lord; he must not drink either wine or strong drink;*This sounds like a Nazirite—Numbers 6:3. indeed, he will be filled with Holy Spirit*Since ‘Holy Spirit’ occurs without a definite article, I take the phrase as a proper name. already from his mother’s womb. 16 And he will turn many of the children of Israel to the Lord their God; 17 in fact he himself will go before Him*The antecedent of "Him" is "the Lord their God"; in effect Gabriel is affirming that the Messiah, Jesus, is God—since he was speaking Hebrew, he may well have said ‘Jehovah their God’. in the spirit and power of Elijah, ‘to turn the hearts of fathers to children’*See Malachi 4:5-6. and the disobedient to the mindset of the righteous,*The righteous have one mindset; the disobedient have a different one. To change someone’s conduct you need to change his mindset. to prepare a people made ready for the Lord."