1 John 1:8

If we say that we have no sin, we deceive ourselves, and the truth is not in us.

James 3:2

For in many things we all offend. If any one offend not in speech, the same is a perfect man, able to bridle the whole body also.

1 John 2:4

He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.

Romans 3:23

For all have sinned, and fail of obtaining the glory which cometh from God;

1 Corinthians 3:18

Let no one deceive himself; if any one thinketh himself wise among you in this world, let him become a fool, that he may become wise.

Galatians 6:3

For if a man thinketh himself to be something, when he is nothing, he deceiveth himself.

1 Timothy 6:5

incessant disputings of men corrupted in their minds, and destitute of the truth, supposing that godliness is gain.

2 Timothy 3:13

But evil men and impostors will wax worse and worse, deceiving and being deceived.

James 1:22

But be doers of the word, and not hearers only, deceiving yourselves.

James 1:26

If any one thinks that he is religious, and bridles not his tongue, but deceives his own heart, this mans religion is vain.

2 Peter 2:13

receiving the wages of unrighteousness. Counting it pleasure to riot in the daytime, spots and blemishes, reveling in their deceits while they feast with you,

1 John 1:6

If we say that we have fellowship with him, and walk in the darkness, we lie, and do not the truth;

1 John 1:10

If we say that we have not sinned, we make him a liar, and his word is not in us.

1 John 3:5-6

And ye know that he was manifested to take away sins; and in him is no sin.

2 John 1:2

for the sake of the truth which abideth in us, and will be with us for ever.

3 John 1:3

For I rejoiced greatly, when brethren came and bore witness to thy truth, as thou walkest in truth.

Treasury of Scripture Knowledge

Summary

If we say that we have no sin, we deceive ourselves, and the truth is not in us.

General references

Bible References

Say

1 John 1:6
If we say that we have fellowship with him, and walk in the darkness, we lie, and do not the truth;
1 John 3:5
And ye know that he was manifested to take away sins; and in him is no sin.
Romans 3:23
For all have sinned, and fail of obtaining the glory which cometh from God;
James 3:2
For in many things we all offend. If any one offend not in speech, the same is a perfect man, able to bridle the whole body also.

We deceive

1 Corinthians 3:18
Let no one deceive himself; if any one thinketh himself wise among you in this world, let him become a fool, that he may become wise.
Galatians 6:3
For if a man thinketh himself to be something, when he is nothing, he deceiveth himself.
2 Timothy 3:13
But evil men and impostors will wax worse and worse, deceiving and being deceived.
James 1:22
But be doers of the word, and not hearers only, deceiving yourselves.
2 Peter 2:13
receiving the wages of unrighteousness. Counting it pleasure to riot in the daytime, spots and blemishes, reveling in their deceits while they feast with you,

General references

Hebrews 8:12
For I will be merciful to their unrighteousness, and their sins and their iniquities I will remember no more."