1. Who it is that secures this comfort to them (v. 2): It is the Lord, the maker thereof, the Lord that framed it, He is the maker and former of heaven and earth, and therefore has all power in his hands; so it refers to Jeremiah's prayer, ch. xxxii. 17. He is the maker and former of Jerusalem, of Zion, built them at first, and therefore can rebuild them—built them for his own praise, and therefore will. He formed it, to establish it, and therefore it shall be established till those things be introduced which cannot be shaken, but shall remain for ever. He is the maker and former of this promise; he has laid the scheme for Jerusalem's restoration, and he that has formed it will establish it, he that has made the promise will make it good; for Jehovah is his name, a God giving being to his promises by the performance of them, and when he does this he is known by that name (Exod. vi. 3), a perfecting God. When the heavens and the earth were finished, then, and not till then, the creator is called Jehovah, Gen. ii. 4.