LUK 1:17

17 And he will go forth before Adonoi in the ruach [(spirit)] and koach [(power)] of Eliyahu HaNavi, VEHESHIV LEV AVOT AL BANIM [(And he will turn the heart of the fathers to the children)] and those without mishma'at [(obedience)] he will turn to the chochmah of the tzaddikim to prepare for Adonoi an Am [(People)] having been made ready.