Hebrews 10:10; Hebrews 10:14; Hebrews 10:29

10 And by that will, we have been made holy through the sacrifice of the body of Jesus Christ once for all.
14 For by one sacrifice he has made perfect forever those who are being made holy.
29 How much more severely do you think someone deserves to be punished who has trampled the Son of God underfoot, who has treated as an unholy thing the blood of the covenant that sanctified them, and who has insulted the Spirit of grace?