John 9:41

Jesus said to them, “If you were blind [to spiritual things], you would have no sin [and would not be blamed for your unbelief]; but since you claim to have [spiritual] sight, [you have no excuse so] your sin and guilt remain.

Proverbs 26:12

Do you see a man [who is unteachable and] wise in his own eyes and full of self-conceit?
There is more hope for a fool than for him.

Isaiah 5:21

Woe (judgment is coming) to those who are wise in their own eyes
And clever and shrewd in their own sight!

Jeremiah 2:35

Yet you keep saying, ‘I am innocent;
Surely His anger has turned away from me.’
Behold (listen very carefully), I will bring you to judgment and will plead my case against you
Because you say, ‘I have not sinned.’

Luke 12:47

And that servant who knew his master’s will, and yet did not get ready or act in accord with his will, will be beaten with many lashes [of the whip],

Luke 18:14

I tell you, this man went to his home justified [forgiven of the guilt of sin and placed in right standing with God] rather than the other man; for everyone who exalts himself will be humbled, but he who humbles himself [forsaking self-righteous pride] will be exalted.”

John 15:22-24

If I had not come and spoken to them, they would not have [the guilt of their] sin; but now they have no excuse for their sin.

Hebrews 10:26

For if we go on willfully and deliberately sinning after receiving the knowledge of the truth, there no longer remains a sacrifice [to atone] for our sins [that is, no further offering to anticipate],

1 John 1:8-10

If we say we have no sin [refusing to admit that we are sinners], we delude ourselves and the truth is not in us. [His word does not live in our hearts.]

Treasury of Scripture Knowledge

Summary

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.

General references

Matthew 13:13

Luke 11:35

James 4:17

Bible References

General references

This is the reason I speak to the crowds in parables: because while [having the power of] seeing they do not see, and while [having the power of] hearing they do not hear, nor do they understand and grasp [spiritual things].

Be careful, therefore, that the light that is in you is not darkness.

So any person who knows what is right to do but does not do it, to him it is sin.