And that is why he is called Pooh. If we say we have no sin we deceive ourselves and the truth is not in us. I wonder if we are so honest in our own self appraisal. We like to indulge our sinful nature, at least at first. In fact it is sometimes only the consequences of sin, like gorse bushes, that call us to repentance.
Sin is a tricky business because it is deception at it's best.
The first and best deception is that sin is primarily what we do and not who we are. If sin is limited to what we do, then we can stop sinning. And people who think they have stopped sinning act in extremely sinful ways towards those who they think have not. You see it goes much deeper than behavior. Of course not.