2 Peter 2:21

For it had been better for them never to have been acquainted with the way of righteousness, than, after knowing it, to have turned aside from the holy commandment delivered unto them.

Luke 12:47

And that servant, who knew his master's will, and made no preparation for him, nor did according to his pleasure, shall be beaten with many stripes.

Romans 7:12

So then the law indeed is holy, and the commandment holy, and just, and good.

Hebrews 6:4-6

For it is not possible to renew again unto repentance those who have been once illuminated, and have tasted the celestial gift, and have been made partakers of the Holy Ghost,

Matthew 11:23-24

And thou, Capernaum, who hast been exalted unto heaven, shalt be cast down to hell: for if the miracles which have been wrought in thee had been done in Sodom, it had remained unto this day.

Matthew 21:32

For John came unto you in the way of righteousness, and ye believed him not: but the tax-gatherers and harlots believed on him. But ye, when ye saw it, repented not afterwards, that ye should believe on him.

John 9:41

Jesus said to them, If ye were blind, ye should not have had sin: but now ye say, We see; therefore your sin is permanent.

John 15:22

Had I not come and spoken to them, they would not have had sin: but now they have no excuse for their sin.

1 Thessalonians 4:2

For ye know what commandments we gave you by the Lord Jesus.

James 4:17

Therefore if a man knoweth how to act properly, and doth not, he is criminal.

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 thou, Capernaum, who hast been exalted unto heaven, shalt be cast down to hell: for if the miracles which have been wrought in thee had been done in Sodom, it had remained unto this day.
Luke 12:47
And that servant, who knew his master's will, and made no preparation for him, nor did according to his pleasure, shall be beaten with many stripes.
John 9:41
Jesus said to them, If ye were blind, ye should not have had sin: but now ye say, We see; therefore your sin is permanent.
John 15:22
Had I not come and spoken to them, they would not have had sin: but now they have no excuse for their sin.

The way

Matthew 21:32
For John came unto you in the way of righteousness, and ye believed him not: but the tax-gatherers and harlots believed on him. But ye, when ye saw it, repented not afterwards, that ye should believe on him.

Holy

Romans 7:12
So then the law indeed is holy, and the commandment holy, and just, and good.
1 Thessalonians 4:2
For ye know what commandments we gave you by the Lord Jesus.

General references

Matthew 7:27
and the rain descended, and the rivers rushed, and the winds blew, and set against that house, and it fell; and the fall of it was great.
Luke 14:30
saying, This man began to build, and was not able to finish.
Luke 17:32
Remember Lot's wife.
1 Timothy 5:15
For some are already turned aside after Satan.