Hebrews 2:3
how shall we escape if we neglect such a great salvation? It was declared at first by the Lord, and it was confirmed to us by those who heard him,
Hebrews 6:6
and then have fallen away, to renew them again to repentance, since they crucify again for themselves the Son of God, and put him to an open shame.
Hebrews 9:28
so Christ, having been offered once to bear the sins of many, will appear a second time, not to bear sin but to bring salvation to those who are eagerly waiting for him.
Hebrews 10:26-29
For if we sin deliberately after we have received the knowledge of the truth, there no longer remains a sacrifice for sins,
Hebrews 12:25
See to it that you do not refuse him who is speaking. For if they did not escape when they refused him who warned them on earth, how much less shall we escape, if we turn away from him who warns us from heaven?