Explain how an action can be sinful , even if a person does not know that it is sinful.

Well sin is sin regardless of who does it, the way it is done, or who acknowledges. If you are a person who believe in sin than it is best for your conscious to be attuned to sin ( so you can recognise it and make changes) But for just every day people we all sin and while we may not count every sin we should always strive for self control. For people who don't know what they are doing is sin- it is still sin. God may judge that person differently than one is very aware of sin ( and held more accountable)

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