So, either stand up on front of the Judge with your sin on your own account and be judged and be found guilty and be cast out "into outer darkness where there will (not surprisingly) be wailing and gnashing of teeth". Or take up Gods offer and have your sin punished by someone who takes the punishment for you.
In the days of kings the prince always had a "whipping boy" who was punished instead of the prince when the prince did wrong because you can't punish royalty.
Is Jesus our "whipping boy"