2 Peter 2:21

For it were better for them not to have known the way of righteousness, than, after knowing it, to turn back from the holy commandment delivered to them.

Ezekiel 18:24

But suppose a righteous person turns away from doing right and he does evil things. He does all the disgusting things that the wicked person did. Will he live? All the right things that he has done will not be remembered because of his unfaithfulness and because of his sin. He will die because of them.

Luke 12:47

The unfaithful servant who knew what his master wanted and did not do it will be beaten.

Romans 7:12

The law is holy, and the commandment holy, and righteous, and good.

Hebrews 6:4-6

Those who were once enlightened, and have tasted of the heavenly gift, and were made partakers of the Holy Spirit,

Psalm 36:3-4

The words of his mouth are wickedness and deceit and he ceased to be wise and do good.

Psalm 125:5

Jehovah will lead those who turn away from their crooked ways with the workers of iniquity. Israel will have peace.

Proverbs 12:28

The way of righteousness is life. In its pathway there is no death.

Proverbs 16:31

Gray hair is a crown of glory when it is found in the way of righteousness.

Ezekiel 3:20

If righteous people turn from living the right way and do wrong, I will make them stumble and they will die. If you do not warn them, they will die because of their sin. The right things they did will not be remembered. I will hold you responsible for their deaths.

Ezekiel 23:13

I saw that she had defiled herself and that they both went the same way.

Zephaniah 1:6

The same for those who have turned back from following Jehovah, and those who have not sought Jehovah or inquired of Him.

Matthew 11:23-24

Will you, Capernaum, be exalted into heaven? You will go down into the grave. If the mighty works had been done in Sodom, which were done in you, it would have remained until this day.

Matthew 21:32

John came to you in the way of righteousness and you did not believe him. Even the tax collectors and prostitutes believed him. When you saw this, you did not regret your sins and did not have faith in him.

John 9:41

Jesus replied: If you were blind you would have no sin. But you say we see so your sin remains.

John 15:22

If I had not come and spoken to them, they would not have sin. Now they have no excuse for their sin!

1 Thessalonians 4:2

You know the commandments we gave you through the Lord Jesus.

James 4:17

He that knows to do good, and does not do it, to him it is 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.

Bible References

It had

Matthew 11:23
Will you, Capernaum, be exalted into heaven? You will go down into the grave. If the mighty works had been done in Sodom, which were done in you, it would have remained until this day.
Luke 12:47
The unfaithful servant who knew what his master wanted and did not do it will be beaten.
John 9:41
Jesus replied: If you were blind you would have no sin. But you say we see so your sin remains.
John 15:22
If I had not come and spoken to them, they would not have sin. Now they have no excuse for their sin!

The way

Proverbs 12:28
The way of righteousness is life. In its pathway there is no death.
Proverbs 16:31
Gray hair is a crown of glory when it is found in the way of righteousness.
Matthew 21:32
John came to you in the way of righteousness and you did not believe him. Even the tax collectors and prostitutes believed him. When you saw this, you did not regret your sins and did not have faith in him.

To turn

Psalm 36:3
The words of his mouth are wickedness and deceit and he ceased to be wise and do good.
Psalm 125:5
Jehovah will lead those who turn away from their crooked ways with the workers of iniquity. Israel will have peace.
Ezekiel 3:20
If righteous people turn from living the right way and do wrong, I will make them stumble and they will die. If you do not warn them, they will die because of their sin. The right things they did will not be remembered. I will hold you responsible for their deaths.
Ezekiel 18:24
But suppose a righteous person turns away from doing right and he does evil things. He does all the disgusting things that the wicked person did. Will he live? All the right things that he has done will not be remembered because of his unfaithfulness and because of his sin. He will die because of them.
Ezekiel 23:13
I saw that she had defiled herself and that they both went the same way.
Zephaniah 1:6
The same for those who have turned back from following Jehovah, and those who have not sought Jehovah or inquired of Him.

Holy

Romans 7:12
The law is holy, and the commandment holy, and righteous, and good.
1 Thessalonians 4:2
You know the commandments we gave you through the Lord Jesus.

General references

Genesis 24:6
Abraham answered: Make sure that you do not send my son back there!
Numbers 14:4
They said to each other: Let us choose a leader and go back to Egypt.
Deuteronomy 14:7
Do not eat of these that chew the cud, or among those that divide the hoof in two: the camel and the rabbit and the shaphan. Even though they chew the cud, they do not divide the hoof. They are unclean for you.
Jeremiah 34:11
Later they changed their minds and took back the men and women they had freed and made them their slaves again.
Ezekiel 33:18
If the righteous person turns from the right things that he has done and does evil, he will die because of it.
Matthew 7:27
The rain descended, and the floods came, and the winds blew and battered the house and it fell with a great crash.
Luke 14:30
You started and could not finish,' they will say.
Luke 17:32
Remember Lot's wife!
1 Timothy 5:15
Some have already turned aside after Satan.