James 4:17

So it is a sin for the person who knows to do what is good and doesn’t do it.

John 9:41

“If you were blind,” Jesus told them, “you wouldn’t have sin. But now that you say, ‘We see’—your sin remains.

Luke 12:47-48

And that slave who knew his master’s will and didn’t prepare himself or do it will be severely beaten.

John 13:17

If you know these things, you are blessed if you do them.

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.

Romans 1:20-21

For His invisible attributes, that is, His eternal power and divine nature, have been clearly seen since the creation of the world, being understood through what He has made. As a result, people are without excuse.

Romans 1:32

Although they know full well God’s just sentence—that those who practice such things deserve to die—they not only do them, but even applaud others who practice them.

Romans 2:17-23

Now if you call yourself a Jew, and rest in the law, boast in God,

Romans 7:13

Therefore, did what is good cause my death? Absolutely not! On the contrary, sin, in order to be recognized as sin, was producing death in me through what is good, so that through the commandment, sin might become sinful beyond measure.

2 Peter 2:21

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

Treasury of Scripture Knowledge

Summary

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

Bible References

General references

Luke 12:47
And that slave who knew his master’s will and didn’t prepare himself or do it will be severely beaten.
John 9:41
“If you were blind,” Jesus told them, “you wouldn’t have sin. But now that you say, ‘We see’—your sin remains.
John 13:17
If you know these things, you are blessed if you do them.
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.
Romans 1:20
For His invisible attributes, that is, His eternal power and divine nature, have been clearly seen since the creation of the world, being understood through what He has made. As a result, people are without excuse.
Romans 2:17
Now if you call yourself a Jew, and rest in the law, boast in God,
Romans 7:13
Therefore, did what is good cause my death? Absolutely not! On the contrary, sin, in order to be recognized as sin, was producing death in me through what is good, so that through the commandment, sin might become sinful beyond measure.

Holman Christian Standard Bible®, Copyright © 1999, 2000, 2002, 2003, 2009 by Holman Bible Publishers.