Luke 1 17
It is he who will go as a forerunner before Him in the spirit and power of Elijah, to turn the hearts of the fathers back to the children, and the disobedient to the attitude of the righteous [which is to seek and submit to the will of God]—in order to make ready a people [perfectly] prepared [spiritually and morally] for the Lord.”
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AMP Luke 1:17And he will [himself] go before Him in the spirit and power of Elijah, to turn back the hearts of the fathers to the children, and the disobedient and incredulous and unpersuadable to the wisdom of the upright [which is the knowledge and holy love of the will of God]–in order to make ready for the Lord a people [perfectly] prepared [in spirit, adjusted and disposed and placed in the right moral state]. [Isa. 40:3; Mal. 4:5, 6.]