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 offends not in word, he is a perfect man, able also to bridle the whole body.

1 John 2:4

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

Romans 3:23

for all have sinned, and come short of the glory of God,

1 Corinthians 3:18

Let no one deceive himself: if any one among you is considered as wise in this age, let him become a fool, that he may be wise.

Galatians 6:3

For if any one think himself to be something when he is nothing, he deceives himself:

1 Timothy 6:5

and wranglings, on the part of men who are corrupt in mind, and destitute of the truth, who suppose that godliness is a source of gain. From such withdraw yourself.

2 Timothy 3:13

But evil men and impostors will become 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 among you seems to be religious, and bridles not his tongue, but deceives his own heart, this man's religion is vain.

2 Peter 2:13

and receive the reward of unrighteousness. Counting it a pleasure to riot in the day-time, they are spots and stains, rioting in their delusions, while feasting with you;

1 John 1:6

If we say that we have fellowship with him, and walk in 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 you know that he was manifested, that he might take away our sins; and in him there is no sin.

2 John 1:2

we all love you, on account of the truth that dwells in us, and which will be with us forever:

3 John 1:3

For I rejoiced greatly when the brethren came and testified to the truth that is in you, even as you walk in the 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 darkness, we lie, and do not the truth.
1 John 3:5
And you know that he was manifested, that he might take away our sins; and in him there is no sin.
Romans 3:23
for all have sinned, and come short of the glory of God,
James 3:2
For in many things we all offend. If any one offends not in word, he is a perfect man, able also to bridle the whole body.

We deceive

1 Corinthians 3:18
Let no one deceive himself: if any one among you is considered as wise in this age, let him become a fool, that he may be wise.
Galatians 6:3
For if any one think himself to be something when he is nothing, he deceives himself:
2 Timothy 3:13
But evil men and impostors will become 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
and receive the reward of unrighteousness. Counting it a pleasure to riot in the day-time, they are spots and stains, rioting in their delusions, while feasting with you;

General references

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