John 15:22 If I had not come and spoken to them, they would not be guilty of sin; but now they have no excuse for their sin.
It is not because your friend told you about your sin that you are guilty – we do not have the right to judge or blame each other for doing stuff against someone else, never mind God!
Jesus came to make sure we understood how the scriptures are in fact the truth. He came to show us to depend on them. He came to show us they do tell us where we go wrong!
We don’t really have the excuse of saying we were not sure anymore either. We know and the writing is plainly on the wall for us to realise our sin is sin!