This portion of sacred history therefore is like a complete exposition of the sentence of Paul's words, "For through the law cometh the knowledge of sin," Rom. 3:20. For the law does nothing but make known and cause to revive that sin, which before the knowledge of the law lay asleep as it were and dead. Just as in the following chapter it is said to Cain, "If thou doest evil, thy sin sleepeth until it be made known to thee," Gen. 4:7. For it lieth asleep, while it is in the act. But when the law comes then the eyes are opened, so that the man then sees what God had commanded, and what punishment he had decreed for the transgressors of his command. When this takes place, so that the law fully rules in the conscience; then a man arrives at the true knowledge of his sin, which knowledge no human hearts can endure unless consolation be given them from above. What Moses next adds, therefore, that after they had eaten the fruit, "they saw that they were naked," are words by no means superfluous nor without special import. For if duly considered, they contain a beautiful description of original righteousness. The schoolmen indeed argue that original righteousness was not connatural; that is, not a part of human nature as originally created; but a certain ornament, only additionally bestowed on man as a separate gift. Just as if one should place a garland on the head of a beautiful maiden. A garland is certainly no part of the nature of a virgin, but something separate from her nature as such; something added from without, which might be taken away again without any violation of her nature. These schoolmen therefore argue, both concerning man and concerning devils, that, although they lost their original righteousness, yet their natural properties remained pure as they were originally created. This doctrine however detracts from the magnitude of original sin and is to be shunned as a deadly poison. We conclude therefore that original righteousness was not a superadded gift, which was bestowed from without, separate from the very nature of man; but a truly natural righteousness; so that it was the very nature of Adam to know God, to love God, to believe in God, to acknowledge God and to worship God, etc. These things were as natural in Adam, as it is natural to the eyes to see the light. When the eye is injured by the infliction of a wound, you may rightly affirm that nature is violated; so after man fell from his original righteousness, it is correctly maintained, that the properties of nature were no longer sound and whole, but defiled and corrupted by sin. For as it is the nature of the eye to see, so it was the original nature of the reason and of the will of Adam to know God, to trust in God, and to fear God.