In these verses the apostle considers the gospel under the notion of a will or testament, the new or last will and testament of Christ, and shows the necessity and efficacy of the blood of Christ to make this testament valid and effectual. I. The gospel is here considered as a testament, the new and last will and testament of our Lord and Saviour Jesus Christ. It is observable that the solemn transactions that pass between God and man are sometimes called a covenant, here a testament. A covenant is an agreement between two or more parties about things that are in their own power, or may be so, and this either with or without a mediator; this agreement takes effect at such time and in such manner as therein declared. A testament is a voluntary act and deed of a single person, duly executed and witnessed, bestowing legacies on such legatees as are described and characterized by the testator, and which can only take effect upon his death. Now observe, Christ is the Mediator of a New Testament (Heb 9:15); and he is so for several ends and purposes here mentioned. 1. To redeem persons from their transgressions committed against the law or first testament, which makes every transgression a forfeiture of liberty, and makes men debtors, and slaves or prisoners, who need to be redeemed. 2. To qualify all those that are effectually called to receive the promise of an eternal inheritance. These are the great legacies that Christ by his last will and testament has bequeathed to the truly characterized legatees. II. To make this New Testament effectual, it was necessary that Christ should die; the legacies accrue by means of death. This he proves by two arguments: - 1. From the general nature of every will or testamentary disposition, Heb 9:16. Where a testament is, where it acts and operates, there must of necessity by the death of the testator; till then the property is still in the testator's hand, and he has power to revoke, cancel, or alter, his will as he pleases; so that no estate, no right, is conveyed by will, till the testator's death has made it unalterable and effectual. 2. From the particular method that was taken by Moses in the ratification of the first testament, which was not done without blood, Heb 9:18, Heb 9:19, etc. All men by sin had become guilty before God, had forfeited their inheritance, their liberties, and their very lives, into the hands of divine justice; but God, being willing to show the greatness of his mercy, proclaimed a covenant of grace, and ordered it to be typically administered under the Old Testament, but not without the blood and life of the creature; and God accepted the blood of bulls and goats, as typifying the blood of Christ; and by these means the covenant of grace was ratified under the former dispensation. The method taken by Moses, according to the direction he had received from God, is here particularly related (1.) Moses spoke every precept to all the people, according to the law, Heb 9:19. He published to them the tenour of the covenant, the duties required, the rewards promised to those who did their duty, and the punishment threatened against the transgressors, and he called for their consent to the terms of the covenant; and this in an express manner. (2.) Then he took the blood of calves and of goats, with water, and scarlet wool, and hyssop, and applied this blood by sprinkling it. This blood and water signified the blood and water that came out of our Saviour's pierced side, for justification and sanctification, and also shadowed forth the two sacraments of the New Testament, baptism and the Lord's supper, with scarlet wool, signifying the righteousness of Christ with which we must be clothed, the hyssop signifying that faith by which we must apply all. Now with these Moses sprinkled, [1.] The book of the law and covenant, to show that the covenant of grace is confirmed by the blood of Christ and made effectual to our good. [2.] The people, intimating that the shedding of the blood of Christ will be no advantage to us if it be not applied to us. And the sprinkling of both the book and the people signified the mutual consent of both parties, God and man, and their mutual engagements to each other in this covenant through Christ, Moses at the same time using these words, This is the blood of the testament which God hath enjoined unto you. This blood, typifying the blood of Christ, is the ratification of the covenant of grace to all true believers. [3.] He sprinkled the tabernacle and all the utensils of it, intimating that all the sacrifices offered up and services performed there were accepted only through the blood of Christ, which procures the remission of that iniquity that cleaves to our holy things, which could not have been remitted but by that atoning blood.