1. On whom these blessings are poured out. (1.) On the house of David, on the great men; for they are no more, and no better, than the grace of God makes them. It was promised (v. 8) that the house of David should be as the angel of the Lord. Now, in order to that, the Spirit of grace is poured upon them; for the more the saints have of the Spirit of grace the more like they are to the holy angels. When God was about to appear for the land, he poured his Spirit of grace upon the house of David, the leading men of the land. It bodes well to a people when princes and great men go before the rest in that which is good, as 2 Chron. xx. 5. The house of David is all summed up in Jesus Christ, the Son of David; and upon him, as the head, the Spirit of grace is poured out, from him to be diffused to all his members; from his fulness we receive, and grace for grace. (2.) On the inhabitants of Jerusalem, the common people; for the operations of the Spirit are the same upon the mean and weak Christians that they are upon the strong and more grown. The inhabitants of Jerusalem cannot influence public affairs by their powers and policies, as the great men of the house of David may, yet they may do good service by their prayers, and therefore upon them the Spirit shall be poured out. The church is Jerusalem, the heavenly Jerusalem; all true believers, that have their conversation in the heaven, are inhabitants of this Jerusalem, and to them this promise belongs. God will pour his Spirit upon them. This is the earnest which all that believe in Christ shall receive; thus they are sanctified; thus they are sealed.