Genesis 3:11

And He said, Who told thee that thou wast naked? Hast thou eaten of the tree whereof I commanded thee that thou shouldest not eat? Adam would have remained in the state of blissful innocence if he had not eaten of the forbidden fruit; he would not have known his nakedness. The fact that he was aware of his nakedness was a definite proof of his having transgressed the command of the Lord; for this consciousness came from within and was a mark of his guilt.