15 Therefore he is the mediator of a new covenant, so that those who are called may receive the promised eternal inheritance, since a death has occurred that redeems them from the transgressions committed under the first covenant.[1] 16 For where a will is involved, the death of the one who made it must be established. 17 For a will takes effect only at death, since it is not in force as long as the one who made it is alive. 18 Therefore not even the first covenant was inaugurated without blood. 19 For when every commandment of the law had been declared by Moses to all the people, he took the blood of calves and goats, with water and scarlet wool and hyssop, and sprinkled both the book itself and all the people, 20 saying, "This is the blood of the covenant that God commanded for you." 21 And in the same way he sprinkled with the blood both the tent and all the vessels used in worship. 22 Indeed, under the law almost everything is purified with blood, and without the shedding of blood there is no forgiveness of sins.
23 Thus it was necessary for the copies of the heavenly things to be purified with these rites, but the heavenly things themselves with better sacrifices than these.
Matthew Henry's Commentary on Hebrews 9:15-23
Commentary on Hebrews 9:15-22
(Read Hebrews 9:15-22)
The solemn transactions between God and man, are sometimes called a covenant, here a testament, which is a willing deed of a person, bestowing legacies on such persons as are described, and it only takes effect upon his death. Thus Christ died, not only to obtain the blessings of salvation for us, but to give power to the disposal of them. All, by sin, were become guilty before God, had forfeited every thing that is good; but God, willing to show the greatness of his mercy, proclaimed a covenant of grace. Nothing could be clean to a sinner, not even his religious duties; except as his guilt was done away by the death of a sacrifice, of value sufficient for that end, and unless he continually depended upon it. May we ascribe all real good works to the same all-procuring cause, and offer our spiritual sacrifices as sprinkled with Christ's blood, and so purified from their defilement.
Commentary on Hebrews 9:23-28
(Read Hebrews 9:23-28)
It is evident that the sacrifices of Christ are infinitely better than those of the law, which could neither procure pardon for sin, nor impart power against it. Sin would still have been upon us, and have had dominion over us; but Jesus Christ, by one sacrifice, has destroyed the works of the devil, that believers may be made righteous, holy, and happy. As no wisdom, learning, virtue, wealth, or power, can keep one of the human race from death, so nothing can deliver a sinner from being condemned at the day of judgment, except the atoning sacrifice of Christ; nor will one be saved from eternal punishment who despises or neglects this great salvation. The believer knows that his Redeemer liveth, and that he shall see him. Here is the faith and patience of the church, of all sincere believers. Hence is their continual prayer as the fruit and expression of their faith, Even so come, Lord Jesus.