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."
      1. The prayers he has often made shall now receive an answer of peace: Fear not, Zacharias, for thy prayer is heard. (1.) If he means his particular prayer for a son to build up his family, it must be the prayers he had formerly made for that mercy, when he was likely to have children; but we may suppose, now that he and his wife were both well stricken in years, as they had done expecting it, so they had done praying for it: like Moses, it sufficeth them, and they speak no more to God of that matter,Deuteronomy 3:26. But God will now, in giving this mercy, look a great way back to the prayers that he had made long since for and with his wife, as Isaac for and with his, Genesis 25:21. Note, Prayers of faith are filed in heaven, and are not forgotten, though the thing prayed for is not presently given in. Prayers made when we were young and coming into the world may be answered when we are old and going out of the world. But, (2.) If he means the prayers he was now making, and offering up with his incense, we may suppose that those were according to the duty of his place, for the Israel of God and their welfare, and the performance of the promises made to them concerning the Messiah and the coming of his kingdom: "This prayer of thine is now heard: for thy wife shall shortly conceive him that is to be the Messiah's forerunner." Some of the Jewish writers themselves say that the priest, when he burnt incense, prayed for the salvation of the whole world; and now that prayer shall be heard. Or, (3.) In general, "The prayers thou now makest, and all thy prayers, are accepted of God, and come up for a memorial before him" (as the angel said to Cornelius, when he visited him at prayer, Acts 10:30; Acts 10:31); "and this shall be the sign that thou are accepted of God, Elisabeth shall bear thee a son." Note, it is very comfortable to praying people to know that their prayers are heard; and those mercies are doubly sweet that are given in answer to prayer.