1 Corinthians 4:4

I am not aware of anything against myself, but I am not acquitted by this. It is the Lord who judges me.

James 3:2

For we all stumble in many ways. If anyone does not stumble in what he says, he is a perfect man, able to bridle the whole body as well.

1 John 1:8-10

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

Treasury of Scripture Knowledge

Summary

Who can say, I have made my heart clean, I am pure from my sin?

Bible References

General references

1 Corinthians 4:4
I am not aware of anything against myself, but I am not acquitted by this. It is the Lord who judges me.
James 3:2
For we all stumble in many ways. If anyone does not stumble in what he says, he is a perfect man, able to bridle the whole body as well.
1 John 1:8
If we say we have no sin, we deceive ourselves, and the truth is not in us.