Hebrews 2:2; Hebrews 9:15

Hebrews 2:2

2 For if the word spoken through angels proved unalterable, and every transgression and disobedience received a just penalty,

Hebrews 9:15

15 For this reason He is the mediator of a new covenant, so that, since a death has taken place for the redemption of the transgressions that were committed under the first covenant, those who have been called may receive the promise of the eternal inheritance.