Hebrews 2:3
how shall *we* escape if we are indifferent to a salvation as great as that now offered to us? This, after having first of all been announced by the Lord Himself, had its truth made sure to us by those who heard Him,
Hebrews 6:6
it is impossible, I say, to keep bringing them back to a new repentance, for, to their own undoing, they are repeatedly crucifying the Son of God afresh and exposing Him to open shame.
Hebrews 9:28
so the Christ also, having been once offered in sacrifice in order that He might bear the sins of many, will appear a second time, separated from sin, to those who are eagerly expecting Him, to make their salvation complete.
Hebrews 10:26-29
For if we wilfully persist in sin after having received the full knowledge of the truth, there no longer remains in reserve any other sacrifice for sins.
Hebrews 12:25
Be careful not to refuse to listen to Him who is speaking to you. For if they of old did not escape unpunished when they refused to listen to him who spoke on earth, much less shall we escape who turn a deaf ear to Him who now speaks from Heaven.