Hebrews 9

15 And on account of this He is the Mediator of the new covenant, so that, since a death has occurred for redemption of the transgressions at the time of the first covenant, that those having been called may receive the promise of the eternal inheritance.

The Mediator’s Death Necessary

16 For where there is a testament, there is necessity for death to be offered of the one making the testament. 17 For a testament is valid over dead people, since it is never valid when the one making the testament lives.