looking for a bible verse about sin...

7 Shall we say, then, that the Law itself is sinful? Of course not! But it was the Law that made me know what sin is. If the Law had not said, “Do not desire what belongs to someone else,” I would not have known such a desire. 8 But by means of that commandment sin found its chance to stir up all kinds of selfish desires in me. Apart from law, sin is a dead thing. 9 I myself was once alive apart from law; but when the commandment came, sin sprang to life, 10 and I died. And the commandment which was meant to bring life, in my case brought death. 11 Sin found its chance, and by means of the commandment it deceived me and killed me.
(Romans 7:7-11)

"Where sin abounds, grace does much more abound". . .Romans 5

(Probably not what you're looking for, but it's in the same vein)

have a look at Romans 7: 9-10

cheers folks