There is no forgiveness of sins outside of Christ. Period. If the sin is FORGIVEN, then there is no PUNISHMENT DUE in the first place. Your comment makes no sense in light of Scripture. Whoever believes they can be cleansed walking thru a door is a pagan by defintion.
What you said is not necessarily true about no punishment being due. In this world, a murderer can be forgiven the sin but must spend time in jail (punishment). As to the concept of God punishing, I don't understand it but I know He does.
In some cases, I believe God does remit the punishment due the forgiven sin but not always.
Whoever believes they can be cleansed walking thru a door is a pagan by defintion.
You did it again. No catholic believes that, and if they do, they are ignorant of their faith. Whether you agree with the concept or not, a catholic walks through the door to gain an indulgence which shortens the time of punishment or eliminates it altogether. If you believe he is a pagan because he believes in indulgences that is one thing, but you do violence to the truth when you cling to your notion that catholics believe they are cleansed. Most of them know better than that.
In catholic theology, the only thing that CLEANSES from sin is the blood of Christ.