Hebrews 10:26

For if we deliberately sin after receiving the knowledge of the truth, there no longer remains a sacrifice for sins,

2 Peter 2:20-22

For if, having escaped the world’s impurity through the knowledge of our Lord and Savior Jesus Christ, they are again entangled in these things and defeated, the last state is worse for them than the first.

1 John 5:16

If anyone sees his brother committing a sin that does not bring death, he should ask, and God will give life to him—to those who commit sin that doesn’t bring death. There is sin that brings death. I am not saying he should pray about that.

Leviticus 4:2

“Tell the Israelites: When someone sins unintentionally against any of the Lord’s commands and does anything prohibited by them—

Leviticus 4:13

“Now if the whole community of Israel errs, and the matter escapes the notice of the assembly, so that they violate any of the Lord’s commands and incur guilt by doing what is prohibited,

Numbers 15:28-31

The priest must then make atonement before the Lord on behalf of the person who acts in error sinning unintentionally, and when he makes atonement for him, he will be forgiven.

Deuteronomy 17:12

The person who acts arrogantly, refusing to listen either to the priest who stands there serving the Lord your God or to the judge, must die. You must purge the evil from Israel.

Daniel 5:22-23

“But you his successor, Belshazzar, have not humbled your heart, even though you knew all this.

Luke 12:47

And that slave who knew his master’s will and didn’t prepare himself or do it will be severely beaten.

John 9:41

“If you were blind,” Jesus told them, “you wouldn’t have sin. But now that you say, ‘We see’—your sin remains.

John 13:17

If you know these things, you are blessed if you do them.

John 15:22-24

If I had not come and spoken to them, they would not have sin. Now they have no excuse for their sin.

2 Thessalonians 2:10

and with every unrighteous deception among those who are perishing. They perish because they did not accept the love of the truth in order to be saved.

1 Timothy 1:13

one who was formerly a blasphemer, a persecutor, and an arrogant man. But I received mercy because I acted out of ignorance in unbelief.

Hebrews 6:4-6

For it is impossible to renew to repentance those who were once enlightened, who tasted the heavenly gift, became companions with the Holy Spirit,

Matthew 12:43-45

“When an unclean spirit comes out of a man, it roams through waterless places looking for rest but doesn’t find any.

Psalm 19:12-13

Who perceives his unintentional sins?
Cleanse me from my hidden faults.

Matthew 12:31-32

Because of this, I tell you, people will be forgiven every sin and blasphemy, but the blasphemy against the Spirit will not be forgiven.

James 4:17

So it is a sin for the person who knows to do what is good and doesn’t do it.

Treasury of Scripture Knowledge

Summary

For if we sin wilfully after that we have received the knowledge of the truth, there remaineth no more sacrifice for sins,

Bible References

If

Hebrews 6:4
For it is impossible to renew to repentance those who were once enlightened, who tasted the heavenly gift, became companions with the Holy Spirit,
Leviticus 4:2
“Tell the Israelites: When someone sins unintentionally against any of the Lord’s commands and does anything prohibited by them—
Numbers 15:28
The priest must then make atonement before the Lord on behalf of the person who acts in error sinning unintentionally, and when he makes atonement for him, he will be forgiven.
Deuteronomy 17:12
The person who acts arrogantly, refusing to listen either to the priest who stands there serving the Lord your God or to the judge, must die. You must purge the evil from Israel.
Psalm 19:12
Who perceives his unintentional sins?
Cleanse me from my hidden faults.
Daniel 5:22
“But you his successor, Belshazzar, have not humbled your heart, even though you knew all this.
Matthew 12:31
Because of this, I tell you, people will be forgiven every sin and blasphemy, but the blasphemy against the Spirit will not be forgiven.
John 9:41
“If you were blind,” Jesus told them, “you wouldn’t have sin. But now that you say, ‘We see’—your sin remains.
1 Timothy 1:13
one who was formerly a blasphemer, a persecutor, and an arrogant man. But I received mercy because I acted out of ignorance in unbelief.
2 Peter 2:20
For if, having escaped the world’s impurity through the knowledge of our Lord and Savior Jesus Christ, they are again entangled in these things and defeated, the last state is worse for them than the first.
1 John 5:16
If anyone sees his brother committing a sin that does not bring death, he should ask, and God will give life to him—to those who commit sin that doesn’t bring death. There is sin that brings death. I am not saying he should pray about that.

General references

Deuteronomy 18:19
I will hold accountable whoever does not listen to My words that he speaks in My name.
Matthew 7:27
The rain fell, the rivers rose, the winds blew and pounded that house, and it collapsed. And its collapse was great!”
Matthew 24:21
For at that time there will be great tribulation, the kind that hasn’t taken place from the beginning of the world until now and never will again!
Mark 3:28
I assure you: People will be forgiven for all sins and whatever blasphemies they may blaspheme.
Luke 12:10
Anyone who speaks a word against the Son of Man will be forgiven, but the one who blasphemes against the Holy Spirit will not be forgiven.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.