Luke 1:15-17 NIV

15 for 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.

References for Luke 1:15

16 He will bring back many of the people of Israel to the Lord their God.
17 And 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.”

References for Luke 1:17