Hebrews 10:26

For we sinning willingly after we have received the perfect knowledge of the truth, there is left no more sacrifice for sins,

2 Peter 2:20-22

For if having escaped the pollutions of the world through the perfect knowledge of our Lord and Saviour Jesus Christ, and having again become entangled in these things, they are overcome, the last state has to them become worse than the first.

1 John 5:16

If any one may see his brother sinning a sin not unto death, he shall ask, and he will give him life to those sinning not unto death. There is a sin unto death; concerning this I do not say that you may ask.

Luke 12:47

But that servant knowing the will of his lord, and not preparing or doing according to his will, shall be beaten with many stripes.

John 9:41

Jesus said to them, If you were blind you would not have sin: but now you say that, We see: your sin remaineth.

John 13:17

If you know these things, happy are ye if you may do them.

John 15:22-24

If I did not come and speak to them, they had not sin: now they have no excuse for their sin.

2 Thessalonians 2:10

and in all the deception of unrighteousness to those who perish; because they did not receive the divine love of the truth, that they might be saved.

1 Timothy 1:13

being antecedently a blasphemer, and a persecutor, and an insulter: but I obtained mercy, because I did it in unbelief being ignorant;

Hebrews 6:4-6

For it is impossible that those having been once enlightened, and tasted the heavenly gift, and have been made partakers of the Holy Ghost,

Matthew 12:43-45

And when the unclean spirit may go out from the man, he goes through dry places seeking rest, and finds none.

Matthew 12:31-32

Therefore I say unto you, every sin and blasphemy shall be forgiven unto men; but the blasphemy of the Spirit shall not be forgiven unto men.

James 4:17

Therefore to him that knows to do good, and does it not, 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 it is impossible that those having been once enlightened, and tasted the heavenly gift, and have been made partakers of the Holy Ghost,
Matthew 12:31
Therefore I say unto you, every sin and blasphemy shall be forgiven unto men; but the blasphemy of the Spirit shall not be forgiven unto men.
John 9:41
Jesus said to them, If you were blind you would not have sin: but now you say that, We see: your sin remaineth.
1 Timothy 1:13
being antecedently a blasphemer, and a persecutor, and an insulter: but I obtained mercy, because I did it in unbelief being ignorant;
2 Peter 2:20
For if having escaped the pollutions of the world through the perfect knowledge of our Lord and Saviour Jesus Christ, and having again become entangled in these things, they are overcome, the last state has to them become worse than the first.
1 John 5:16
If any one may see his brother sinning a sin not unto death, he shall ask, and he will give him life to those sinning not unto death. There is a sin unto death; concerning this I do not say that you may ask.

General references

Matthew 7:27
And the rain came down, and the rivers came, and the winds blew, and beat against that house; and it fell: and great was the fall of it.
Matthew 24:21
For then there will be great tribulation, such as has not been from the beginning of the world even until now nor ever may be.
Mark 3:28
Truly I say unto you, that all sins shall be forgiven unto the sons of men, and blasphemies whatsoever they may blaspheme:
Luke 12:10
And every one who shall speak a word against the Son of man, it shall be forgiven him: but to him having blasphemed against the Holy Ghost, it shall not be forgiven.