He will go before him in the spirit and power of Elijah, 'to turn the hearts of the fathers to the children,' and the disobedient to the wisdom of the just; to make ready a people prepared for the Lord."
      [5.] Hereby he shall turn the hearts of the fathers to the children, that is, of the Jews to the Gentiles; shall help to conquer the rooted prejudices which the Jews have against the Gentiles, which was done by the gospel, as far as it prevailed, and was begun to be done by John Baptist, who came for a witness, that all through him might believe, who baptized and taught Roman soldiers as well as Jewish Pharisees, and who cured the pride and confidence of those Jews who gloried in their having Abraham to their father, and told them that God would out of stones raise up children unto Abraham (Matthew 3:9), which would tend to cure their enmity to the Gentiles. Dr. Lightfoot observes, It is the constant usage of the prophets to speak of the church of the Gentiles as children to the Jewish church, Isaiah 54:5; Isaiah 54:6; Isaiah 54:13; Isaiah 60:4; Isaiah 60:9; Isaiah 62:5; Isaiah 66:12. When the Jews that embraced the faith of Christ were brought to join in communion with the Gentiles that did so too, then the heart of the fathers was turned to the children. And he shall turn the disobedient to the wisdom of the just, that is, he shall introduce the gospel, by which the Gentiles, who are now disobedient, shall be turned, no so much to their fathers the Jews, but to the faith of Christ, here called the wisdom of the just, in communion with the believing Jews; or thus, He shall turn the hearts of the fathers with the children, that is, the hearts of old and young, shall be instrumental to bring some of every age to be religious, to work a great reformation in the Jewish nation, to bring them off from a ritual traditional religion which that had rested in, and to bring them up to substantial serious godliness: and the effect of this will be, that enmities will be slain and discord made to cease; and they are at variance, being united in his baptism, will be better reconciled one to another. This agrees with the account Josephus gives of John Baptist, Antiq. 18. 117-118. "That he was a good man, and taught the Jews the exercise of virtue, in piety towards God, and righteous towards one another, and that they should convene and knit together in baptism." And he saith, "The people flocked after him, and were exceedingly delighted in his doctrine." Thus he turned the hearts of fathers and children to God and to one another, by turning the disobedient to the wisdom of the just. Observe, First, True religion is the wisdom of just men, in distinction from the wisdom of the world. It is both our wisdom and our duty to be religious; there is both equity and prudence in it. Secondly, It is not possible but that those who have been unbelieving and disobedient may be turned to the wisdom of the just; divine grace can conquer the greatest ignorance and prejudice. Thirdly, The great design of the gospel is to bring people home to God, and to bring them nearer to one another; and on this errand John Baptist is sent. In the mention that is twice made of his turning people, there seems to be an allusion to the name of the Tishbite, which is given to Elijah, which, some think, does not denote the country or city he was of, but has an appellative signification, and therefore the render it Elijah the converter, one that was much employed, and very successful, in conversion-work. The Elias of the New Testament is therefore said to turn or convert many to the Lord their God.