2 Peter 2:21

"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."

Cross References (ranked by relevance)

Ezekiel 18:24 27

But when the righteous turneth away from his righteousness, and committeth iniquity, and doeth according to all the abominations that the wicked man doeth, shall he live? All his righteousness that he hath done shall not be mentioned: in his trespass that he hath trespassed, and in his sin that he hath sinned, in them shall he die.

James 4:17 20

Therefore to him that knoweth to do good, and doeth it not, to him it is sin.

Ezekiel 3:20 18

Again, When a righteous man doth turn from his righteousness, and commit iniquity, and I lay a stumbling-block before him, he shall die: because thou hast not given him warning, he shall die in his sin, and his righteousness which he hath done shall not be remembered; but his blood will I require at thine hand.

Luke 12:47 14

And that servant, which knew his lord’s will, and prepared not himself, neither did according to his will, shall be beaten with many stripes.

John 15:22 11

If I had not come and spoken unto them, they had not had sin: but now they have no cloak for their sin.

John 9:41

Jesus said unto them, If ye were blind, ye should have no sin: but now ye say, We see; therefore your sin remaineth.

1 Thessalonians 4:2

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

Zephaniah 1:6

And them that are turned back from the LORD; and those that have not sought the LORD, nor enquired for him.

Matthew 21:32

For John came unto you in the way of righteousness, and ye believed him not: but the publicans and the harlots believed him: and ye, when ye had seen it, repented not afterward, that ye might believe him.

Proverbs 16:31

The hoary head is a crown of glory, if it be found in the way of righteousness.

Romans 7:12

Wherefore the law is holy, and the commandment holy, and just, and good.

Proverbs 12:28

In the way of righteousness is life: and in the pathway thereof there is no death.

Ezekiel 23:13

Then I saw that she was defiled, that they took both one way,

Psalm 125:5

As for such as turn aside unto their crooked ways, the LORD shall lead them forth with the workers of iniquity: but peace shall be upon Israel.