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

and if any offend not in word, he is a compleat man, able to manage also the whole body.

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 come short of the glory of God;

1 Corinthians 3:18

Let no one deceive himself: if any among you seem to be wise in this world, let him become a fool, that he may be truly wise.

Galatians 6:3

For if any one thinketh that he is something, when he is nothing, he deceiveth himself.

1 Timothy 6:5

and void of truth, accounting gain to be godliness: from such withdraw thyself.

2 Timothy 3:13

But wicked men and impostors will grow 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 among you seem to be religious, and bridleth not his tongue, but deceiveth his heart, this man's devotion is vain.

2 Peter 2:13

who account it a pleasure to riot even in the day; spots and disgraces; revelling in their frauds, while they partake of your feasts:

1 John 1:6

If we say that we have communion with Him, and walk in darkness, we lie and do not practise the truth:

1 John 1:10

but 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 our sins: and in Him there is no sin.

2 John 1:2

for the sake of the truth which dwelleth in us, and will be with us for ever:

3 John 1:3

For I greatly rejoiced, when the brethren came, and bore testimony to thy truth, even 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 communion with Him, and walk in darkness, we lie and do not practise the truth:
1 John 3:5
And ye know that He was manifested, to 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
and if any offend not in word, he is a compleat man, able to manage also the whole body.

We deceive

1 Corinthians 3:18
Let no one deceive himself: if any among you seem to be wise in this world, let him become a fool, that he may be truly wise.
Galatians 6:3
For if any one thinketh that he is something, when he is nothing, he deceiveth himself.
2 Timothy 3:13
But wicked men and impostors will grow 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
who account it a pleasure to riot even in the day; spots and disgraces; revelling in their frauds, while they partake of your feasts:

General references

Hebrews 8:12
For I will forgive their crimes, and their sins and their iniquities I will remember no more."