1 John 1:8

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

1 John 2:4

He who says, I have known him, and does not keep his commandments, is a liar, and the truth is not in this man.

2 Peter 2:13

receiving the due reward of unrighteousness. These delight to spend the day in luxurious festivity: they are spots and blemishes, reveling in their deceits when they feast with you;

1 John 1:6

If we say that we have fellowship with him, and walk in darkness, we lie, and obey 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

Moreover, you know that he was manifested that he might take away our sins-and in him is no sin.

2 John 1:2

for the truth's sake, which is in us, and shall be with us forever:

3 John 1:3

For I rejoiced greatly, when the brethren came, and bore witness to your truth, even as you walk 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.

We deceive

Bible References

Say

1 John 1:6
If we say that we have fellowship with him, and walk in darkness, we lie, and obey not the truth.
1 John 3:5
Moreover, you know that he was manifested that he might take away our sins-and in him is no sin.

We deceive

2 Peter 2:13
receiving the due reward of unrighteousness. These delight to spend the day in luxurious festivity: they are spots and blemishes, reveling in their deceits when they feast with you;