Hebrews 10:26

For we sinning voluntarily after receiving the knowledge of the truth, there is left no more a sacrifice for sins,

2 Peter 2:20-22

For if having escaped the pollutions of the world by the knowledge of our Lord and Savior Jesus Christ, and again entangling with these, they be conquered, the last things have been to them worse than the first.

1 John 5:16

If any see his brother sinning a sin not to death, he shall ask, and sinning will give him life to them sinning not to death. There is a sin to death: I say not of that, that he should ask.

Leviticus 4:2

Speak to the sons of Israel, saying, When a saul shall sin in error from all the commands of Jehovah which shall not be done, and doing from after any of them:

Leviticus 4:13

And if all the assembly of Israel shall err, and the word was hid from the eyes of the assembly, and they did behind from the commands of Jehovah, which shall not be done, and they were guilty,

Numbers 15:28-31

And the priest expiated for the soul erring, in sinning in error before Jehovah, to expiate for him; and it was forgiven to him.

Deuteronomy 17:12

And the man which shall do in pride not to hear to the priest, he standing to serve there Jehovah thy God, or to the judge, and that man shall die: and put thou away evil from Israel

Daniel 5:22-23

And thou his son, O Belshazzar, didst not humble thy heart because that thou knewest all this;

Luke 12:47

And that servant having known his lord's will, and not prepared, neither having done his will, shall be skinned with many.

John 9:41

We are not also blind? Jesus said to them If ye were blind, ye had not sinned: and now ye say, That we see; therefore your sin remains.

John 13:17

If ye know these, happy are ye if ye do them.

John 15:22-24

If I had not come and spoken to them, they had not sin and now they have no pretext for their sin.

2 Thessalonians 2:10

And in all deceit of iniquity in the lost; because they received not the love of the truth, for them to be saved.

1 Timothy 1:13

Being before slandering, expelling, and an abuser: but I was commiserated, because I did, not knowing, in unbelief.

Hebrews 6:4-6

For impossible for them once enlightened, and having tasted of the heavenly gift, and having partaken of the Holy Spirit,

Matthew 12:43-45

And when the unclean spirit has gone out from a man, he passes through sterile places, seeking rest, and finds not.

Psalm 19:12-13

Who will understand errors? acquit me from hidden things.

Matthew 12:31-32

For this I say to you, All sin and blasphemy shall be let go to men; but the blasphemy of the Spirit shall not be let go to men.

James 4:17

Therefore to him knowing to do good, and not doing, to him it is sin.

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 impossible for them once enlightened, and having tasted of the heavenly gift, and having partaken of the Holy Spirit,
Leviticus 4:2
Speak to the sons of Israel, saying, When a saul shall sin in error from all the commands of Jehovah which shall not be done, and doing from after any of them:
Numbers 15:28
And the priest expiated for the soul erring, in sinning in error before Jehovah, to expiate for him; and it was forgiven to him.
Deuteronomy 17:12
And the man which shall do in pride not to hear to the priest, he standing to serve there Jehovah thy God, or to the judge, and that man shall die: and put thou away evil from Israel
Psalm 19:12
Who will understand errors? acquit me from hidden things.
Daniel 5:22
And thou his son, O Belshazzar, didst not humble thy heart because that thou knewest all this;
Matthew 12:31
For this I say to you, All sin and blasphemy shall be let go to men; but the blasphemy of the Spirit shall not be let go to men.
John 9:41
We are not also blind? Jesus said to them If ye were blind, ye had not sinned: and now ye say, That we see; therefore your sin remains.
1 Timothy 1:13
Being before slandering, expelling, and an abuser: but I was commiserated, because I did, not knowing, in unbelief.
2 Peter 2:20
For if having escaped the pollutions of the world by the knowledge of our Lord and Savior Jesus Christ, and again entangling with these, they be conquered, the last things have been to them worse than the first.
1 John 5:16
If any see his brother sinning a sin not to death, he shall ask, and sinning will give him life to them sinning not to death. There is a sin to death: I say not of that, that he should ask.

General references

Deuteronomy 18:19
And it was the man who shall not hear to my word. which he shall speak in my name, I will require from him.
Matthew 7:27
And the rain descended, and rivers came, and winds blew and struck upon that house, and it fell, and great was its fall.
Matthew 24:21
For then shall be great pressure, such as has not been from the beginning of the world till now, nor should be.
Mark 3:28
Truly I say to you, That all sins shall be remitted to the sons of men, and defamations whatever they defame:
Luke 12:10
And every one who shall say a word against the Son of man, it shall be remitted to him: and to him blaspheming against the Holy Spirit, it shall not be remitted.