Hebrews 9 - NCB

How much more, then, will the blood of Christ, who through the eternal Spirit offered himself without blemish to God, purify our conscience from acts that lead to death so that we may worship the living God.
Hebrews 9:14 Jesus Spirit purification
For this reason, he is the mediator of a new covenant, so that those who have been called may receive the promised eternal inheritance, since his death has served to redeem the sins that were committed under the first covenant.
Hebrews 9:15 law Savior mediator

Indeed, under the Law almost everything is purified by blood, and without the shedding of blood there is no forgiveness.
Hebrews 9:22 law blood forgiveness
So Christ, having been offered once to take away the sins of many, will appear a second time, not to deal with sin but to bring salvation to those who are eagerly waiting for him.
Hebrews 9:28 sin sacrifice salvation