Hebrews 10:26

For if we choose to go on sinning after we have so fully learned the truth, there is no sacrifice left to be offered for our sins,

2 Peter 2:20-22

For if after men have escaped the corrupting influences of the world through the knowledge of the Lord and Savior Jesus Christ, they again become entangled in them and are overcome by them, their final condition is worse than their former one.

1 John 5:16

If anyone sees his brother committing any sin except a deadly one, he will ask and obtain life for him??rovided the sin is not a deadly one. There is such a thing as deadly sin; I do not say that a man should pray about that.

Luke 12:47

The slave who knows his master's wishes, but does not get ready or act upon them, will be severely punished.

John 9:41

Jesus said to them, "If you were blind, you would be guilty of no sin, but as it is, you say 'We can see'; so your sin continues.

John 13:17

Now that you have this knowledge, you will be blessed if you act upon it.

John 15:22-24

If I had not come and spoken to them, they would not have been guilty of sin, but as it is, they have no excuse for their sin.

2 Thessalonians 2:10

and full of wicked deception for men who are going to destruction, because they refused to love the truth and be saved.

1 Timothy 1:13

though I once used to abuse, persecute, and insult him. But he had mercy on me, because I had acted in ignorance and unbelief,

Hebrews 6:4-6

For it is impossible to arouse people to a fresh repentance when they have once for all come into the light and had a taste of the gift from heaven, and shared in the holy Spirit

Matthew 12:43-45

"When a foul spirit goes out of a man, it roams through deserts in search of rest and can find none.

Matthew 12:31-32

Therefore, I tell you, men will be forgiven for any sin or abusive speech, but abusive speech about the Spirit cannot be forgiven.

James 4:17

So when a man knows what is right and fails to do it, he is guilty of 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 to arouse people to a fresh repentance when they have once for all come into the light and had a taste of the gift from heaven, and shared in the holy Spirit
Matthew 12:31
Therefore, I tell you, men will be forgiven for any sin or abusive speech, but abusive speech about the Spirit cannot be forgiven.
John 9:41
Jesus said to them, "If you were blind, you would be guilty of no sin, but as it is, you say 'We can see'; so your sin continues.
1 Timothy 1:13
though I once used to abuse, persecute, and insult him. But he had mercy on me, because I had acted in ignorance and unbelief,
2 Peter 2:20
For if after men have escaped the corrupting influences of the world through the knowledge of the Lord and Savior Jesus Christ, they again become entangled in them and are overcome by them, their final condition is worse than their former one.
1 John 5:16
If anyone sees his brother committing any sin except a deadly one, he will ask and obtain life for him??rovided the sin is not a deadly one. There is such a thing as deadly sin; I do not say that a man should pray about that.

General references

Matthew 7:27
And the rain fell, and the rivers rose, and the winds blew and beat about that house, and it went down, and its downfall was complete."
Matthew 24:21
for there will be greater misery then than there has ever been from the beginning of creation until now, or ever will be again.
Mark 3:28
I tell you, men will be forgiven for everything, for all their sins and all the abusive things they say.
Luke 12:10
And anyone who speaks against the Son of Man will be forgiven for it, but no one who reviles the holy Spirit will be forgiven.