“Without the shedding of blood, there is no forgiveness of sins.”
Under the first covenant, God forgives sins through the shedding of the blood of bulls, goats, lambs. Everything “used in worship” is “sprinkled with the blood” of these animals. Even this first covenant “is inaugurated” with blood. This sacrificial animal blood is able to “sanctify for the purification of the flesh,” according to the author of Hebrews.
Since the blood of animals is able to accomplish such a feat, albeit temporarily; then “how much more is the blood of Christ, who through the eternal Spirit offers Himself without blemish to God, able to purify our conscience from dead works to serve the living God.” (Hebrews 9: 13, 14)
Christ “enters…heaven itself, now to appear in the presence of God on our behalf. Nor is it to offer Himself repeatedly, as the high priest enters the holy places every year with blood not his own, for then He would have to suffer repeatedly since the foundation of the world.” (Hebrews 9: 24 – 26)
Christ sacrifice is once for all — a done deal — the new covenant which God makes with Abraham and his descendants.
“Christ is to appear a second time, not to deal with sin but to save those who are eagerly waiting for Him.” (Hebrews 9: 28)