Hebrews 9:15

9:15 And for this cause he is the mediator of the new testament, that by means of death, for the redemption of the transgressions [that were] under the first testament, they which are called might receive the promise of eternal inheritance.

Hebrews 9:25-26

9:25 Nor yet that he should offer himself often, as the high priest entereth into the holy place every year with blood of others; 9:26 For then must he often have suffered since the foundation of the world: but now once in the end of the world hath he appeared to put away sin by the sacrifice of himself.