[yetidog]

Show me where I said that the concept sin did not exist for me personally.

A non-religious -—atheist for example— will define what Christians call sin in secular terms such as moral and immoral behavior, hence their belief that humans are constrained from acting badly by the need for an ordered society. I am not saying I am arguing this, only explaining why the notion of sin and disordered are different things in my mind.

[Resettozero]

...only explaining why the notion of sin and disordered are different things in my mind.

I see.

But sin is more than a notion that exists because one may be religious or not.

Sin is a very real impediment (a noun, a thing, more than merely someone's thought) that separates one from the Eternal Living Father in Heaven, namely Almighty God whom we all must come to terms with, whether one believes He exists or doesn't.

He does.