2 Peter 2:21

For it would have been better for them never to have known the way of uprightness than after knowing it to have turned their backs upon the sacred command with which they had been intrusted.

Luke 12:47

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

Romans 7:12

So the Law itself is holy, and each command is holy, just, and good.

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 11:23-24

And you, Capernaum! Are you to be exalted to the skies? You will go down among the dead! For if the wonders that have been done in you had been done in Sodom, it would have stood until today.

Matthew 21:32

For John came to you with a way of uprightness, and you would not believe him. The tax-collectors and prostitutes believed him, but even after seeing that, you would not change your minds and believe him!

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 15:22

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.

1 Thessalonians 4:2

For you remember what instructions we gave you on the authority of the Lord Jesus.

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 it had been better for them not to have known the way of righteousness, than, after they have known it, to turn from the holy commandment delivered unto them.

The way

Bible References

It had

Matthew 11:23
And you, Capernaum! Are you to be exalted to the skies? You will go down among the dead! For if the wonders that have been done in you had been done in Sodom, it would have stood until today.
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 15:22
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.

The way

Matthew 21:32
For John came to you with a way of uprightness, and you would not believe him. The tax-collectors and prostitutes believed him, but even after seeing that, you would not change your minds and believe him!

Holy

Romans 7:12
So the Law itself is holy, and each command is holy, just, and good.
1 Thessalonians 4:2
For you remember what instructions we gave you on the authority of the Lord Jesus.

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."
Luke 14:30
and say, 'This man started to erect a building, and could not finish it!'
Luke 17:32
Remember Lot's wife!
1 Timothy 5:15
For some widows have already turned aside to follow Satan.