“Moreover, the law entered, that the offense might abound. But where sin abounded, grace did much more abound.”- Romans 5:20

Paul writes, “I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet.” But, as soon as he found that there was a law against a certain sin, by some unhallowed instinct of his unrenewed nature, he wanted to do the very thing that he was forbidden to do. It was like that with us, the first effect of the entrance of the law of God into our hearts was to develop the sin that was already within us. “That is a dreadful thing,” says one. Yes, it is; but look at the matter from another aspect. Here is a man who has within him a dire disease which will be fatal if it is allowed to remain, so the physician gives him some medicine which throws the disease out. The man used to have a beautiful complexion, but after he has taken that medicine, his face is covered with blotches. Is that a bad thing? Yes, the blotches are bad, but the hidden disease was worse. While that disease was concealed within his system, and was killing him, he probably did not even know that is was there. He knew that he was not well, and perhaps thought that he was dying as the result of some other complaint; but now he sees what the disease is, and everybody sees it, and now that which looked like an evil thing may turn out to be for real good to the man. So does it often happen mentally, morally, and spiritually. A man’s wicked heart is full of enmity against God, yet he thinks-and perhaps he is right in thinking-that he is outwardly a strictly moral man; but, lo! the law of God, with its requirements of perfect purity and absolute obedience, enters his heart, and he rebels against it, and now the sin is apparent, even to himself. It is likely now that this man will repent of sin, it is highly probable that this development of his latent sin will lead him to form a different opinion of himself from any that he ever had before; and therefore, though the sin is evil, and the development of it is evil, yet, where sin abounded, grace shall much more abound, and so good shall come out of the evil after all. ~ C.H. Spurgeon

https://www.blueletterbible.org/Comm/spurgeon_charles/sermons/3115.cfm