17 And he shall go before him in the spirit and power of aElias, to turn the hearts of the bfathers to the children, and the cdisobedient to the wisdom of the just; to make ready a people dprepared for the Lord.
Meaning, I assume, that the Holy Ghost, which is the Spirit of Elias (greek form of Elijah) can not only turn the heart of a grumpy father to his children, it can turn the heart of a grumpy rebellious child to the wisdom of his father, provided that father's wisdom is just. (3 Nephi 27:27 might be helpful)
