Hebrews 2:1-2

1 We must pay the most careful attention, therefore, to what we have heard, so that we do not drift away.

2 For since the message spoken through angels was binding, and every violation and disobedience received its just punishment,

Hebrews 2:3

3 how shall we escape if we ignore so great a salvation? This salvation, which was first announced by the Lord, was confirmed to us by those who heard him.