3. On what errand he shall be sent: He shall turn the heart of the fathers to their children, and the heart of the children to their fathers; that is, "he shall be employed in this work; he shall attempt it; his doctrine and baptism shall have a direct tendency to it, and with many shall be successful: he shall be an instrument in God's hand of turning many to righteousness, to the Lord their God, and so making ready a people prepared for him," Luke i. 16, 17. Note, The turning of souls to God and their duty is the best preparation of them for the great and dreadful day of the Lord. It is promised concerning John, (1.) That he shall give a turn to things, shall make a bold stand against the strong torrent of sin and impiety which he found in full force among the children of his people, and beating down all before it. This is called his coming to restore all things (Matt. xvii. 11), to set them to rights, that they may again go in the right channel. (2.) That he shall preach a doctrine that shall reach men's hearts, and have an influence upon them, and work a change in them. God's word, in his mouth, shall be quick and powerful, and a discerner of the thoughts and intents of the heart. Many had their consciences awakened by his ministry who yet were not thoroughly wrought upon, such a spirit and power was there in it. (3.) That he shall turn the hearts of the fathers with the children, and of the children with the fathers (for so some read it), to God and to their duty. He shall call upon young and old to repent, and shall not labour in vain, for many of the fathers that are going off, and many of the children that are growing up, shall be wrought upon by his ministry. (4.) That thus he shall be an instrument to revive and confirm love and unity among relations, and shall bring them closer and bind them faster to each other, by bringing and binding them all to their God. He shall prepare the way for that kingdom of heaven which will make all its faithful subjects of one heart and one soul (Acts iv. 32), which will be a kingdom of love, and will slay all enmities.